| 9/8/12 Race Day Build Count Down | |
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+6MASShole9C1 1984twodoor 8bud Matt Trakker sdstick bfurches 10 posters |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Wed Sep 26, 2012 5:12 pm | |
| ...on the way back up to the chassis shop. I worked all day with Mike on the chromolly transmission crossmember. He did a great job with the bends getting everything tucked up against the floor and out of the way. Hopefully tomorrow we can get the exhaust downpipes and bullets all welded up. The odds and ends are comming to an end for the season....almost time to make a pass! | |
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1984twodoor
Posts : 4068 Join date : 2010-03-30 Age : 30 Location : Wilmington/Wakefield/Andover
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Sep 27, 2012 3:50 pm | |
| Mike worked his magic again.... Drivers side: Passenger side (exhaust clearance): Centered: It is all painted now and bolted in, but I didnt get a chance to take any photos before I had to come to work. Exhaust is about 50% done as well, more to come tomorrow. I am running true dual, but its comming down the passenger side of the car, hence the clearance in the crossmember. | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Sep 27, 2012 7:04 pm | |
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MASShole9C1
Posts : 4294 Join date : 2009-12-16
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Sep 27, 2012 8:15 pm | |
| Too cool! I've gotta get with you guys to have some custom stuff welded up! You continue to do a great job on this build. Many ways to think outside of the box represented here.
These box builds are all white. That's strange. | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Sep 27, 2012 8:39 pm | |
| - MASShole9C1 wrote:
- Too cool! I've gotta get with you guys to have some custom stuff welded up!
You continue to do a great job on this build. Many ways to think outside of the box represented here.
These box builds are all white. That's strange. Thanks man! Whenever you are ready to get some work done, let me know and I will set you up with Mike. His fabrication and welding is second to none. Honestly, you would be hard pressed to find a better chassis builder/ fabricator in the state. | |
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1984twodoor
Posts : 4068 Join date : 2010-03-30 Age : 30 Location : Wilmington/Wakefield/Andover
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Fri Sep 28, 2012 7:44 pm | |
| You guys need to hear this exhaust......it really follows the WTF theme of the entire car LOL.
I am leaving it at Mikes for the weekend, but I am hoping I can get it back to my house and ready to race. Track rental Friday October 12. Should be some good air.... | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Oct 01, 2012 4:29 pm | |
| Ride height... | |
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1984twodoor
Posts : 4068 Join date : 2010-03-30 Age : 30 Location : Wilmington/Wakefield/Andover
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 04, 2012 11:45 am | |
| another engineering marvel! ....well....not really. Maybe engineering hack is more like it..... I have been kicking myself trying to come up with an attractive solution to the alternator mount, and given my space constraints and everything else.....this is what I ended up doing. Its reverse mounted and setup to run on the inner 4 rib portion of the crank pulley to keep it tucked as tight as possible to the motor plate. Best I could come up with, and not to shabby. | |
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MASShole9C1
Posts : 4294 Join date : 2009-12-16
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 04, 2012 12:01 pm | |
| Looks like a good idea to me! Smart idea! | |
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sdstick
Posts : 4292 Join date : 2009-03-20 Location : Revere, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 04, 2012 1:55 pm | |
| I assume you've put a belt on there & put some tension on it? Seems like that mounting method has to pivot around 2 different points. The lower mount is looks like the planned pivot point. What does the bent support do when you adjust the link? Cool look. Reverse mounted is smart too. Another nice job... This car is gonna take alot of time to look over.. .. | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 04, 2012 4:47 pm | |
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1984twodoor
Posts : 4068 Join date : 2010-03-30 Age : 30 Location : Wilmington/Wakefield/Andover
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 04, 2012 11:05 pm | |
| You're nuts. Good work! Can't wait to see this thing running! EDIT: In person | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Fri Oct 05, 2012 7:24 pm | |
| - 1984twodoor wrote:
- You're nuts. Good work!
Can't wait to see this thing running!
EDIT: In person Can you get Friday off from work/ school? You are more then welcome to come up to the track with me and my friends. So far, for the rental, I have recruited 10 cars haha. | |
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MASShole9C1
Posts : 4294 Join date : 2009-12-16
| Subject: Re: 9/8/12 Race Day Build Count Down Fri Oct 05, 2012 7:45 pm | |
| This next Friday? I'll see if the wife will go. Gimme the details. | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Fri Oct 05, 2012 7:59 pm | |
| - MASShole9C1 wrote:
- This next Friday? I'll see if the wife will go. Gimme the details.
Next friday, october 12th. Track rental. Gates at 8am, tech 9am, racing 10am-3pm. Drivers are the only ones that pay, so if you come down with me....ur considered pit crew and free. I dont believe its open to walk in spectators, but just say your in the pits. | |
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MASShole9C1
Posts : 4294 Join date : 2009-12-16
| Subject: Re: 9/8/12 Race Day Build Count Down Fri Oct 05, 2012 8:31 pm | |
| That sounds pretty nifty. I bet they won't let my son in the pits tho. | |
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1984twodoor
Posts : 4068 Join date : 2010-03-30 Age : 30 Location : Wilmington/Wakefield/Andover
| Subject: Re: 9/8/12 Race Day Build Count Down Sat Oct 06, 2012 12:33 am | |
| - bfurches wrote:
- 1984twodoor wrote:
- You're nuts. Good work!
Can't wait to see this thing running!
EDIT: In person Can you get Friday off from work/ school?
You are more then welcome to come up to the track with me and my friends. So far, for the rental, I have recruited 10 cars haha. I wish it was easier than that! Class is out at 2:30 so no point in going after lol! If I wasn't paying out of pocket for it, I'd be more interested in skipping. The excuse is pretty good though - MASShole9C1 wrote:
- That sounds pretty nifty. I bet they won't let my son in the pits tho.
Hey you never know, someone has to sit in the pits and look innocent among all of the hot rodders! | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Tue Oct 09, 2012 7:44 pm | |
| as of yesterday.....rear end issue resolved... | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Wed Oct 10, 2012 8:55 pm | |
| So today I decided to adress the down hill durby racer issue. Some of you guys may remeber how the car used to sit on the 295's ........ well take that....and lower the front another 2 inches SO....with the task at hand I decided to find a way to use linear 12" coil over springs. They are much smaller then the massive beehive design of the stockers (both in diameter and height), but they share the same 2.5" ID at each end like the oem pockets. As you can see, the spring is a LOT shorter....and when installed the shock is at it's limits for travel (MAYBE another inch). So I installed them anyways to take some measurements and see how much the spring compressed. At ride height, the spring (which is 130lb-in) was at 9-1/8." The tire was SLAMMED and it looked awesome....but in all honesty it was a little too low.... I still wanted to keep the springs installed (decent rate for drag, nice linear setup)....so I decided to machine a set of bolt-together spring spacers. Being the spring is linear, putting a spacer on either end wont affect rate, and it will be a direct change in ride height. For example, a 2" spacer will raise the car 2" (not some goofy perportion of the value). I machined a 3.5" OD spacer with a 2.5" counterbore to fit the stock pockets. Then I machined a few additional 1" spacers so I can adjust the height to where I wan't it. I am starting off at 2" and will have photos tomorrow... | |
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MASShole9C1
Posts : 4294 Join date : 2009-12-16
| Subject: Re: 9/8/12 Race Day Build Count Down Wed Oct 10, 2012 9:11 pm | |
| What a friggin good idea! I'll tell ya' go apply at GM and help them with "re inventing the wheel" thing.
I expect side shots tm!
Will these springs increase or decrease the cars tendency to "nose up" at launch? Or? | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Wed Oct 10, 2012 9:15 pm | |
| - MASShole9C1 wrote:
- What a friggin good idea! I'll tell ya' go apply at GM and help them with "re inventing the wheel" thing.
I expect side shots tm!
Will these springs increase or decrease the cars tendency to "nose up" at launch? Or? The spring is probably a little on the light side for the chassis, but I have yet to scale it. But...yes....it should help. With the light springs up front, it should help put the hit on the tire. The next thing I am going to be fighting is control arm angle (not welding my adjustable perches to the rear until I build it this winter). | |
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1984twodoor
Posts : 4068 Join date : 2010-03-30 Age : 30 Location : Wilmington/Wakefield/Andover
| Subject: Re: 9/8/12 Race Day Build Count Down Wed Oct 10, 2012 9:52 pm | |
| ....Show me the ways of this world O master! Those things are awesome, certainly a skill above mine that's for damn sure! | |
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Matt Trakker
Posts : 5093 Join date : 2009-07-30 Age : 42 Location : Reading, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Wed Oct 10, 2012 10:41 pm | |
| It's nice to know we have several machinists on the forum, I have to say. That is awesome.
I think I need to do something like that in the '74 (much toned down, of course). I needed to lift the rear slightly because of the ridiculous departure angle, and used variable rate cargo coils. But they seem pretty stiff and affect the ride in the back kind of strange. I'll probably need to go with stock springs and some sort of small-ish spacer back there. | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Wed Oct 10, 2012 11:29 pm | |
| Thanks for the kind words guys lol. - Matt Trakker wrote:
- It's nice to know we have several machinists on the forum, I have to say. That is awesome.
I think I need to do something like that in the '74 (much toned down, of course). I needed to lift the rear slightly because of the ridiculous departure angle, and used variable rate cargo coils. But they seem pretty stiff and affect the ride in the back kind of strange. I'll probably need to go with stock springs and some sort of small-ish spacer back there. I am FAR from a machinist....some of those guys are absolutely brilliant.....I just like to play with machines haha. However....whenever you are ready for some spacers, let me know how tall and I can whip something up. I have a one piece design as well (vs the bolt-togethers) that I have used with very good success in the past. | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 11, 2012 6:24 pm | |
| First time out driving around today with the car! I put roughly 35 miles on her and made a few stops. Here are the "side" shots of the new ride height as promised. Everything went fairly smooth. Oil pressure and water temperature are in good shape. The only little fluke was when we were doing some carburetor tuning (stationary in the drive way) after revving the car several hundred times.....the torque converter bolts came loose (that SOMEONE may or may have not left slightly loose).Anyways, off to the track tomorrow. I will be back with updates! | |
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MASShole9C1
Posts : 4294 Join date : 2009-12-16
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 11, 2012 7:17 pm | |
| That's the definition of badass ingenuity right there! Thanks for the pics. On a side note.....look at all the goodies in the back ground | |
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V8Killer
Posts : 1691 Join date : 2009-03-12 Age : 52 Location : Southern, NH
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 11, 2012 7:18 pm | |
| - bfurches wrote:
- First time out driving around today with the car! I put roughly 35 miles on her and made a few stops. Here are the "side" shots of the new ride height as promised.
Huh......I have to say that parking lot looks a lot like Cotton's . Nice work BTW | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 11, 2012 7:23 pm | |
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1984twodoor
Posts : 4068 Join date : 2010-03-30 Age : 30 Location : Wilmington/Wakefield/Andover
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Oct 11, 2012 10:09 pm | |
| You'd best be sending me some on track pics! That thing is lookin sweet! | |
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Matt Trakker
Posts : 5093 Join date : 2009-07-30 Age : 42 Location : Reading, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Fri Oct 12, 2012 12:32 am | |
| I love the stuffed rear tires. If I wind up needing coil spacers I WILL be in touch!!! I hope all goes well, can't wait to see this thing! And something tells me that G-body Grand Prix does not have a NA 305 in it. | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Fri Oct 12, 2012 9:51 am | |
| Half way to the track....rained out. Oh well. Next friday try again. | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Nov 05, 2012 3:44 pm | |
| Fuel injection here I come.... | |
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Cadet57
Posts : 4481 Join date : 2010-03-14 Age : 36 Location : Chicopee, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Nov 05, 2012 3:47 pm | |
| - bfurches wrote:
- Fuel injection here I come....
I'm assuming this is because of the tuning issue you had? | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Nov 05, 2012 4:46 pm | |
| i am really not sure what direction I am going to roll yet....
I believe my problem tuning wise with the carb is the intake is just so far off for the application. Its a huge high rpm open plenum designed to operate from 3500-8k while I am running a stock cam with wide lsa and a motor that makes power from idle-5500.
What I have found is that despite pump shot size, as soon as the throttle plates open, the vacuum drops to 0 in a hurry. I think that there is to much initial draw, and the motor falls flat when the booster looses signal. It got a little better with the small carb, but still isnt a 100% right.
I am undecided at this point. Do I go out and spend dough on another intake and possibly another carb....or do I just inject the pig. | |
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V8Killer
Posts : 1691 Join date : 2009-03-12 Age : 52 Location : Southern, NH
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Nov 05, 2012 5:38 pm | |
| - bfurches wrote:
- i am really not sure what direction I am going to roll yet....
I believe my problem tuning wise with the carb is the intake is just so far off for the application. Its a huge high rpm open plenum designed to operate from 3500-8k while I am running a stock cam with wide lsa and a motor that makes power from idle-5500.
What I have found is that despite pump shot size, as soon as the throttle plates open, the vacuum drops to 0 in a hurry. I think that there is to much initial draw, and the motor falls flat when the booster looses signal. It got a little better with the small carb, but still isnt a 100% right.
I am undecided at this point. Do I go out and spend dough on another intake and possibly another carb....or do I just inject the pig. Well, if you inject it, what are you going to do about the hard-mounted engine? Turn the knock sensors off? | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Nov 05, 2012 6:55 pm | |
| - V8Killer wrote:
- bfurches wrote:
- i am really not sure what direction I am going to roll yet....
I believe my problem tuning wise with the carb is the intake is just so far off for the application. Its a huge high rpm open plenum designed to operate from 3500-8k while I am running a stock cam with wide lsa and a motor that makes power from idle-5500.
What I have found is that despite pump shot size, as soon as the throttle plates open, the vacuum drops to 0 in a hurry. I think that there is to much initial draw, and the motor falls flat when the booster looses signal. It got a little better with the small carb, but still isnt a 100% right.
I am undecided at this point. Do I go out and spend dough on another intake and possibly another carb....or do I just inject the pig. Well, if you inject it, what are you going to do about the hard-mounted engine? Turn the knock sensors off? Don't think it would be a problem. There are quite a few guys on tech running plates with knock sensors and no adverse affects. Not really sure yet what to do...just juggling ideas at the moment. I really need to pick a direction for the car as a whole. | |
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1984twodoor
Posts : 4068 Join date : 2010-03-30 Age : 30 Location : Wilmington/Wakefield/Andover
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Nov 05, 2012 9:29 pm | |
| - bfurches wrote:
- Fuel injection here I come....
Never thought I'd see the day! | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Nov 05, 2012 9:32 pm | |
| - 1984twodoor wrote:
- bfurches wrote:
- Fuel injection here I come....
Never thought I'd see the day! you and I both... I'm still undecided but there is a lot more too it. I eventually want to get my own race/chassis shop off the ground...and fuel injection will only get more popular. My thoughts behind it, are I may as well learn now how to tune. If I can be as meticulous with FI as I am with everything else....it would be one more card I could bring to the table. | |
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1984twodoor
Posts : 4068 Join date : 2010-03-30 Age : 30 Location : Wilmington/Wakefield/Andover
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Nov 05, 2012 9:39 pm | |
| - bfurches wrote:
- 1984twodoor wrote:
- bfurches wrote:
- Fuel injection here I come....
Never thought I'd see the day! you and I both...
I'm still undecided but there is a lot more too it. I eventually want to get my own race/chassis shop off the ground...and fuel injection will only get more popular. My thoughts behind it, are I may as well learn now how to tune. If I can be as meticulous with FI as I am with everything else....it would be one more card I could bring to the table.
That's a good point, nitrous, carbs, race chassis, and EFI tuning would work out nice together. If you end up doing the turbo in the Caprice then maybe the EFI is what you should have. | |
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sdstick
Posts : 4292 Join date : 2009-03-20 Location : Revere, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Mon Nov 05, 2012 10:42 pm | |
| To get you thinking........
http://www.enginebuildermag.com/Article/83969/selftuning_efi_systems.aspx | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Tue Nov 06, 2012 7:21 pm | |
| - sdstick wrote:
- To get you thinking........
http://www.enginebuildermag.com/Article/83969/selftuning_efi_systems.aspx ...too easy Steve! I can't let her do ALL the work haha | |
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bfurches
Posts : 1061 Join date : 2010-04-20 Age : 36 Location : Springfield, MA
| Subject: Re: 9/8/12 Race Day Build Count Down Thu Nov 08, 2012 11:21 pm | |
| Just a few updates:
Tuesday I put probably another 40-50 miles on the car. I must say...I am REALLY liking the solid body mounts. Even with no sway bars installed...the feedback from the road is really nice. The vibration from the motor is not bad at all, however the exhaust does drone (what did I expect with just two bullets) lol.
The car certainly moves. Even with a few tuning issues still present, and the carb running super rich....the car gets up. In it's current state, it feels very comprable to the passes I was making before on spray with the sbc. The nose comes up pretty hard and it feels like its hitting the tire pretty good.
As for the game plan.....my buddy has a 2008 Silverado at his yard that was a rollover. I am thinking of snatching up the harness, pcm, dash harness, gauge cluster, fuse boxes and misc switches and etc.....and see what I could do to incorporate it all into my car. I would like to kinda modernize the interior and amenities a bit. I think I have a game plan to fiberglass in a structure to support the cluster and etc....but I am still debating.
I am pretty much just thinking from now until christmas (more important things on the table right now)....but if you have some suggestions....throw them out there. | |
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