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Post by real57vetteguy on Nov 22, 2011 21:55:10 GMT -5
Before I send the fra e to powder coating I am debating closing in the frame. I have noticed those frames are very easily twisted or tweaked, I had thought about boxing the entire mid part and rear part. With that being said, before you reply about the fuel/brake lines or cross member keep in mind, the fellow helping me with this build owns and runs a full out machine shop and he is one of the best fabricators I have even known, we can tap and thread the inner boxed frame rail to run the new lines and we would fabricate a cross member for the transmission out of tube or channel that will bolt right to the new inner frame rails, what do you think?
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Post by oldsproject on Nov 22, 2011 22:32:40 GMT -5
There will be alot of opinions on this I suspect. Only advice I can offer is a freind of mine (Greg Rollins) with supercarsunlimited is running low 7 second 1/8th mile times and 1.4-1.5 second 60' times in a 67 olds on a standard frame. Has had no problems and launches hard but one never knows.
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Post by dolzinnig on Nov 22, 2011 23:57:26 GMT -5
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Post by mongoose on Nov 23, 2011 5:38:00 GMT -5
There will be alot of opinions on this I suspect. Only advice I can offer is a freind of mine (Greg Rollins) with supercarsunlimited is running low 7 second 1/8th mile times and 1.4-1.5 second 60' times in a 67 olds on a standard cutlass frame. Has had no problems and launches hard but one never knows. Is he using a cage or roll bar? I would think running 7-second ET's in the 1/8th the track would require that. And if so, then that cage is providing the strength to minimize twisting. |
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Post by Big Mike on Nov 23, 2011 8:13:27 GMT -5
There will be alot of opinions on this I suspect. Only advice I can offer is a freind of mine (Greg Rollins) with supercarsunlimited is running low 7 second 1/8th mile times and 1.4-1.5 second 60' times in a 67 olds on a standard cutlass frame. Has had no problems and launches hard but one never knows. Hey, are running your exhaust through the bumper in specially equipped backup light housings? And, did you get that tail panel rechromed? And if so where and how much? Many of us would like to find a place that can do those panels correctly. |
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Post by oldsproject on Nov 23, 2011 10:16:42 GMT -5
There will be alot of opinions on this I suspect. Only advice I can offer is a freind of mine (Greg Rollins) with supercarsunlimited is running low 7 second 1/8th mile times and 1.4-1.5 second 60' times in a 67 olds on a standard cutlass frame. Has had no problems and launches hard but one never knows. Is he using a cage or roll bar? I would think running 7-second ET's in the 1/8th the track would require that. And if so, then that cage is providing the strength to minimize twisting. Good point, cage and rear axle frame bracing but no boxing or work on the frame. Car is a super/pro bracket car. He had a good year. |
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Post by oldsproject on Nov 23, 2011 10:20:54 GMT -5
There will be alot of opinions on this I suspect. Only advice I can offer is a freind of mine (Greg Rollins) with supercarsunlimited is running low 7 second 1/8th mile times and 1.4-1.5 second 60' times in a 67 olds on a standard cutlass frame. Has had no problems and launches hard but one never knows. Hey, are running your exhaust through the bumper in specially equipped backup light housings? And, did you get that tail panel rechromed? And if so where and how much? Many of us would like to find a place that can do those panels correctly. Not a bad idea on the exhaust Mike but no, was missing the lenses and didnt have the tips on when that picture was taken. Tail panel is the original that came with the car. In fact all of the chrome is original, nothing done except for the bumpers which I had rechromed and the wheel well stainless which I found on ebay. There isnt a pit in any of it, couple scratches here and there but overall very good condition. Got really lucky. Plan on posting some update pictures this weekend so will take some close ups. |
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Post by mongoose on Nov 24, 2011 6:51:06 GMT -5
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Post by real57vetteguy on Nov 24, 2011 9:38:21 GMT -5
I am totally against putting something inside the car, I cant find this convertible bracing mentioned, I am still pondering
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Post by real57vetteguy on Nov 24, 2011 22:28:15 GMT -5
After really looking at it and a lot of thought, it is just plain common sense that a box frame or any box structure is more ridgid than a C structure/frame I am going to box the entire frame. I dont need a kit its simple to do. When i said I have one of the best fabricators as a good friend, I wasnt exaggerating, this guy is a structural guru, we can box the frame and fabricate a transmission mount out of new scrap materials laying around the shop and do a really nice job of it! The way these C channel frames are you can throw a jack under it and bend the frame if your in the wrong spot, over the years they have to lose structural strength so its a no brainer for me
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Post by BR[] on Nov 24, 2011 23:17:30 GMT -5
Sometimes things are made to flex for a reason. If something is too rigid, it will crack when strained.
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Post by real57vetteguy on Nov 24, 2011 23:26:52 GMT -5
Sometimes things are made to flex for a reason. If something is too rigid, it will crack when strained. I agree totally, but some things were not designed to handle the extra hp/tq im going to install, plus things weaken over time |
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Post by oldsproject on Nov 25, 2011 9:37:02 GMT -5
Sometimes things are made to flex for a reason. If something is too rigid, it will crack when strained. BRO has avery good point and also has the most experiance, especially on this issue and with the cars hes built. We design and build railcars and the basic engineering principals apply to all things. You want structural members that absorb and distribute force evenly. Flexing is a common way to absorb the energy put into a structural member. That said, boxing it wont hurt you, just probably overkill but thats a personal choice. Either way, horse power and tourque wont be a problem unless you hook up. That means sticky tires and a low enough gear to laubch hard. Tire spinning is the other fun way of relieving the energy your engine makes, you'll definately have that going for you ;D |
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Post by real57vetteguy on Nov 25, 2011 10:16:49 GMT -5
I agree with both of you 100%, I am just concerned with the fact that you can bend that C channel just by jacking the car in the wrong place, (mine is actually bent in a couple places) With it boxed I dont believe it will over stiffen the frame and it will stop the bending issue!, Now if there is a problem or issue with boxing it I would like to know before the midifications cause a problem to arise!
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Post by real57vetteguy on Nov 25, 2011 10:17:08 GMT -5
I agree with both of you 100%, I am just concerned with the fact that you can bend that C channel just by jacking the car in the wrong place, (mine is actually bent in a couple places) With it boxed I dont believe it will over stiffen the frame and it will stop the bending issue!, Now if there is a problem or issue with boxing it I would like to know before the modifications cause a problem to arise!
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Post by real57vetteguy on Nov 25, 2011 23:28:07 GMT -5
I looked at the convertible frame tonight, its the same thing as I was proposing to do, its boxed to add structure. I feel like its the right thing to do
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![BR[] Avatar](http://aliquippaoutlaws.homestead.com/Bro442_ANIM_150.gif)
