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Old 03-16-2011, 11:27 PM   #1
RULER
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Exclamation REALLY, Letter to tech.

The 2010 chevy has an aluminum center, chevy rear is lighter so it's easier to change? Get real so the 2008, 2010 CJ's have alum. centers!!, Have you ever done a gear change at the track on a dana 60 or a 12 bolt / 10 bolt GM. Well let me help you unless you remove the whole rear end you will be down there on the ground measuring and checking, the 9 inch and 8/3/4, you can set them up with the center clamped in a vise so it looks like your letter is very self serving. Like it's been told to many with the older cars, if you want the new stuff than get a new car!!
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Old 03-17-2011, 09:05 AM   #2
Chuck Beach
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Default Re: REALLY, Letter to tech.

Ruler, it is just part of this sport, the new cars have either OHC or roller lifters, they have aluminum heads and fuel injection, I would like to have half of that new stuff on my old car but that's not going to happen.
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Old 03-17-2011, 09:55 AM   #3
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Default Re: REALLY, Letter to tech.

Quote:
Originally Posted by RULER View Post
The 2010 chevy has an aluminum center, chevy rear is lighter so it's easier to change? Get real so the 2008, 2010 CJ's have alum. centers!!, Have you ever done a gear change at the track on a dana 60 or a 12 bolt / 10 bolt GM. Well let me help you unless you remove the whole rear end you will be down there on the ground measuring and checking, the 9 inch and 8/3/4, you can set them up with the center clamped in a vise so it looks like your letter is very self serving. Like it's been told to many with the older cars, if you want the new stuff than get a new car!!
2008 CJ's have an iron center, not aluminum. Strange housing and center section sold through Ford Racing.
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Old 03-17-2011, 10:05 AM   #4
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Default Re: REALLY, Letter to tech.

I do know of the headaches of the 12 bolts and the Danas, BUT I was at St Louis at a National and witnessed David Rampy break a ring and pinion in his stock Camaro. He and one other fellow had it changed and were qualified a couple of hours later. It was all done right there in the pits, no shop, no fancy stuff, just hard work and a procedure that had obviously been used before.

I guess I am saying there are ways around everything, look and you will find it.

By the way any header suggestions for an FE would be greatly appreciated, PM me.
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Old 03-17-2011, 10:31 AM   #5
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Default Re: REALLY, Letter to tech.

This seems to boil down to a problem with the rulebook. We all have opinions on what should and should not be allowed but at the end of the day, something as simple as the center-section issue should be written in black and white in the rulebook. What if Kenny couldn't find a center-section in time? We all know he is one of the most stout supporters of NHRA even when they make stupid decisions. Imagine driving 35 hours round trip with diesel at $4.30 per gallon assuming that your car is 100% legal and getting told to go home, and not because you didn't follow the rulebook to a tee. I agree that his car and others should not have an aluminum center section but the rulebook says nothing about it so I would race it also. I believe that in 2011 with all the technology we have Corvettes should no longer be allowed to put 12-bolts in the cars but that's a different issue.

Plain and simple, NHRA has been tweaking the Engine Blueprints on the new cars more often than not over the last few months. Just go look at the updates on the website. Is it really that hard to clarify something like centersections? It would take someone in Glendora 15 minutes to post a "Racer Update" saying that no one can run aluminum center sections except the new cars and at least the issue would be put to rest.
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Old 03-17-2011, 10:34 AM   #6
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Default Re: REALLY, Letter to tech.

Quote:
Originally Posted by CycloneFE View Post
I do know of the headaches of the 12 bolts and the Danas, BUT I was at St Louis at a National and witnessed David Rampy break a ring and pinion in his stock Camaro. He and one other fellow had it changed and were qualified a couple of hours later. It was all done right there in the pits, no shop, no fancy stuff, just hard work and a procedure that had obviously been used before.

I guess I am saying there are ways around everything, look and you will find it.

By the way any header suggestions for an FE would be greatly appreciated, PM me.
A lot of guys who run Danas or 12 bolts have a spare ring and pinion already set up to the housing with the correct shims. Carry an inch pound wrench to set the bearing drag and some seals, gaskets and your ready to go. Its a simple deal then to just clean out the broken mess and swap in the new parts. Ive set up rears over the years ahead of time and have done just this same thing. Beats trying to do it in the dirt. Not everyone has a stacker trailer with a lift or a friend who has one. As in Kens case I would have had a spare (Iron) third member in the trailer already to go in case of breakage or crap like happened to him in tech. It would have saved a lot of grief and shipping charges. Probably enough to cover the cost of another carrier.
I agree that the rule book isnt clear BUT if it dosent say you can do something then you should not.

Last edited by X-TECH MAN; 03-17-2011 at 10:37 AM.
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Old 03-17-2011, 10:36 AM   #7
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Default Re: REALLY, Letter to tech.

No measuring and checking if you do your homework. Set the spare gear up at the shop. Keep the shims with it in the trailer. On a Dana you can spread the case or cool the ring gear, spool and bearings in a cooler of ice, slide it in after the pre setup pinion is installed, blow dry and your good to go. Been a long tine but I think we used to use .004 tight on the carrier bearings and with ice the shrinkage was just enough, Sure you might have to be under the car, but not much longer than with a chunk.
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Old 03-17-2011, 12:07 PM   #8
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Post Re: REALLY, Letter to tech.

Quote:
Originally Posted by RULER View Post
The 2010 chevy has an aluminum center, chevy rear is lighter so it's easier to change? Get real so the 2008, 2010 CJ's have alum. centers!!, Have you ever done a gear change at the track on a dana 60 or a 12 bolt / 10 bolt GM. Well let me help you unless you remove the whole rear end you will be down there on the ground measuring and checking, the 9 inch and 8/3/4, you can set them up with the center clamped in a vise so it looks like your letter is very self serving. Like it's been told to many with the older cars, if you want the new stuff than get a new car!!
Shows how well you think things out before trying to stir things up!

I don't see where the request to allow aluminum 9" and 8 3/4" center sections have anything to do with the new cars or the extra labor involved with gear changes in a Dana 60 or 12 bolt. It's for racers who already have the 9" or 8 3/4" in their cars and would like a replacement option for them that is stronger, safer, can provide contingency opportunities and makes the factory happy because they can sell more parts! NHRA, in typical fashion, confuses the situation by not being specific and allows at least Mopar to post contingency for them. Of all the things that NHRA has allowed with aftermarket parts, like blocks, heads, etc., an aluminum carrier would likely have the least amount of performance benefit.

I'm curious if Mopar posted with NHRA for their aluminum 8 3/4 center sections in Stock in years before the Drag Pak Challengers were introduced. If so, then it would imply that they would be legal in older cars! Any Ford or aftermarket postings in years before the Mustangs came out in Stock?
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Old 03-17-2011, 01:09 PM   #9
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Default Re: REALLY, Letter to tech.

last year we got gigged on the vertical brace in front of the radiator on a 67 Camaro--this is the support piece that goes from the hood latch mechanism to the core support we honestly forgot it when we put the car back to gether after painting it------Tech said it absolutely had to be in there--so we went to a bone yard got one from a 1968 olds 88 4 door sedan sprayed it black and put it in with zip ties put the bolts in a plastic baggie did not fit but it was in there --He was happy !!! bunch of BS ---Also did not like the way the roll hoop behind the seat was bent but we had a letter and pictures from NHRA Tech ok'ing it kinda ruffled his feathers a bit but F him --He passed it after about an hour going back & forth over some other small stuff wrong knobs on the radio kinda **** if ya know what I mean---stuff that had absolutely NO impact on performance simply cosmetic crap---comp
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Old 03-17-2011, 03:42 PM   #10
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Exclamation Re: REALLY, Letter to tech.

Quote:
Originally Posted by Myron Piatek View Post
Shows how well you think things out before trying to stir things up!


I'm curious if Mopar posted with NHRA for their aluminum 8 3/4 center sections in Stock in years before the Drag Pak Challengers were introduced. If so, then it would imply that they would be legal in older cars! Any Ford or aftermarket postings in years before the Mustangs came out in Stock?
Myron,
The answer to your question is yes. I have been paid for an aluminum rear assembly by Chrysler several times, however it was when I was driving the FWD Spirit. Jim
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