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Re: Tube Chassis cars, what to look for?
[Re: rebel]
#2282057
04/04/17 09:07 AM
04/04/17 09:07 AM
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Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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How old is it? If you are planning on getting a cert, NHRA changed wall thicknesses on M/S a bunch of years ago. Check welds, eyeball up squareness. Sit in it and make sure you fit.
[image][/image]
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Re: Tube Chassis cars, what to look for?
[Re: RTSE4ME]
#2282077
04/04/17 10:22 AM
04/04/17 10:22 AM
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Joined: Feb 2005
Posts: 20,181
PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,181
PA.
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I'm not sure how your rules are were you race but I would get a rule book or chassis spec sheet. My mild steel Daytona was well built and would easily pass 8.50 cert. When I wanted to lower it to 7.50 we figured 4 bars but when it was on a host it actually needed 8 as some of the rules changed over the years. They were all small bars and only cost 400-500 dollars but it could have gotten crazy real fast. Hopefully he one you are looking at has struts already and a good rearend or once again it will cost big money to get track ready. Sometimes a deal isn't a deal.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: Tube Chassis cars, what to look for?
[Re: rebel]
#2282360
04/04/17 05:53 PM
04/04/17 05:53 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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When I was building chassis's we were allowed to sleeve tubes but they had to be welded also with at least 2 added puddle welds to show that they were welded there.. I dont know if that rule still stands or not.. the books will tell you 
Last edited by MR_P_BODY; 04/04/17 05:54 PM.
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Re: Tube Chassis cars, what to look for?
[Re: rebel]
#2282676
04/05/17 08:57 AM
04/05/17 08:57 AM
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Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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I think the rear x brace should have landed on top of the frame rails, not on the inside. In the upper left of the pic, it looks like the x brace is spliced to the main hoop. I would question that area.
[image][/image]
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Re: Tube Chassis cars, what to look for?
[Re: rebel]
#2282677
04/05/17 08:59 AM
04/05/17 08:59 AM
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Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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And the rear down bars are welded on a plate, that is welded to the rear shock crossmember? I don't know about that, either.
[image][/image]
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Re: Tube Chassis cars, what to look for?
[Re: sgcuda]
#2282916
04/05/17 04:29 PM
04/05/17 04:29 PM
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Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
Chassisman
master
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master
Joined: Sep 2006
Posts: 3,749
Chowchilla,ca
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And the rear down bars are welded on a plate, that is welded to the rear shock crossmember? I don't know about that, either. From the main hoop back is all wrong ...not that it won't pass tech or cert at about 90% of the tracks. But if this car gets in a high speed inpact those rear struts are leaving the scene for sure.... Good catch on all of those.
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Re: Tube Chassis cars, what to look for?
[Re: rebel]
#2283994
04/07/17 03:45 PM
04/07/17 03:45 PM
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Joined: Dec 2005
Posts: 11,600
Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,600
Fulton County, PA
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You will have more time and money in fixing that than building one from scratch. And it will still be a hacked up car when you're done. Good used cars are cheap now. If it doesn't have a current tag on it, I would pass, regardless what it looks like. That wouldn't pass with any inspectors I know. The stories I could tell about projects that started out with something like that to save money. Most of the time it ends up being thrown in the trash and maybe saving a rear end and some brakes and wheels out of it. Not bashing. I just hate to see people waste money.
Last edited by CMcAllister; 04/07/17 03:49 PM.
If the results don't match the theory, change the theory.
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Re: Tube Chassis cars, what to look for?
[Re: rebel]
#2284002
04/07/17 04:08 PM
04/07/17 04:08 PM
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Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
Biginchmopar
pro stock
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pro stock
Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
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i'm going to check out a tube chassis car next week, i've always had back halfed street cars so what does one look for with a tube chassis?
The car has box section in the middle with tubed extentions front & rear. A steel shell has been fitted & a glass front clip. A Mark Williams fabricated 9 3/4 differential with Strange case & floater axles. It's 4 bar rear, Front struts & a Strange Steering rack fitted. Some tin work still needs doing but has a floor tunnel over the trans & a driveshaft loop inside the car. This is an unfinished project from 2x previous owners. Both owners had gone the Hemi Route so BBM is an easy fit. Since its never been a finished racecar, what things would i need to pay attention to when i'm looking at everything? Anybody got pics of theirs or someones project? it's not quite a Pro Mod but its getting close. That thing is miles away from being a ProMod! If I were you I would pass on this thing. How fast are you wanting to go? I doubt that chassis would pass any cert.
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Re: Tube Chassis cars, what to look for?
[Re: Biginchmopar]
#2284016
04/07/17 04:34 PM
04/07/17 04:34 PM
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Joined: Dec 2013
Posts: 403
Romulus, MI
GTS340
mopar
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mopar
Joined: Dec 2013
Posts: 403
Romulus, MI
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8.50 Cert that I changed to 6.0 Cert What spec is that? I see 2x3 main rails, those are only good to 7.50, or did you add redundant chromoly rails?
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Re: Tube Chassis cars, what to look for?
[Re: GTS340]
#2284021
04/07/17 04:41 PM
04/07/17 04:41 PM
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Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
Biginchmopar
pro stock
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pro stock
Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
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8.50 Cert that I changed to 6.0 Cert What spec is that? I see 2x3 main rails, those are only good to 7.50, or did you add redundant chromoly rails? All chromoly in cage area, even double frame railed.
Last edited by Biginchmopar; 04/07/17 04:45 PM.
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Re: Tube Chassis cars, what to look for?
[Re: GTS340]
#2284071
04/07/17 06:00 PM
04/07/17 06:00 PM
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Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
Biginchmopar
pro stock
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pro stock
Joined: Nov 2010
Posts: 1,397
Carson City, Nevada
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So you replaced the 2x3 rails? I just added the two frame rail bars along with the 2 x 3. I would have had to completely redo the car to to remove the 2 x 3 and that was out of the question.
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