[PICS] New engine is in!!
Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Bronze is only good for 100's of miles even with careful attention to setting the cam button at .004 or so
Polymer Carbon fiber are rated in the 25- 50K mile range.
Alumiunum heads need header studs and they make exhaust changes a breaze.
Polymer Carbon fiber are rated in the 25- 50K mile range.
Alumiunum heads need header studs and they make exhaust changes a breaze.
Thread Starter
Team Owner
Joined: Jul 2001
Posts: 182,997
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From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Originally Posted by 69 N.O.X. RATT
It has to do with the hardness of the cam gear. If I remember correctly if it is a billit or hard steel cam gear you had to run the bronze gear; other wise it would chew up the distributor gear. That was the compromise you had to make to run a roller cam. That has since changed with softer distributor gears (iron) on less aggresive roller cams. With the poly gear you can run the agresssive ramps and it will not wear.
I was sceptical a plastic gear would wear like it does; but mine has lasted very well with .650+ lift and 7000 rpms.
Good luck on the new motor Oliver
I was sceptical a plastic gear would wear like it does; but mine has lasted very well with .650+ lift and 7000 rpms.
Good luck on the new motor Oliver
Thread Starter
Team Owner
Joined: Jul 2001
Posts: 182,997
Likes: 88
From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Originally Posted by gkull
Bronze is only good for 100's of miles even with careful attention to setting the cam button at .004 or so
Polymer Carbon fiber are rated in the 25- 50K mile range.
Alumiunum heads need header studs and they make exhaust changes a breaze.
Polymer Carbon fiber are rated in the 25- 50K mile range.
Alumiunum heads need header studs and they make exhaust changes a breaze.
Drifting
Joined: Nov 2002
Posts: 1,665
Likes: 1
From: Ontario
Originally Posted by GrandSportC3
I hope that the rear end will hold up... I talked with Tom's and they are confident that it'l hold up...
Thread Starter
Team Owner
Joined: Jul 2001
Posts: 182,997
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From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Originally Posted by Boofers
According to the article, Tom's diff has already stood up to 1200hp nitrous equipped vettes running 8's!
Race Director
Joined: Dec 1999
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Likes: 9
header studs are cheap insurance, no change of stripping threads, loads distributed more equally, gaskets install easier, fewer chances of leaks... I don't see any reason why not to do it..and they are pretty reasonable priced.
Thread Starter
Team Owner
Joined: Jul 2001
Posts: 182,997
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From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Originally Posted by Twin_Turbo
header studs are cheap insurance, no change of stripping threads, loads distributed more equally, gaskets install easier, fewer chances of leaks... I don't see any reason why not to do it..and they are pretty reasonable priced.
Team Owner
Joined: Apr 1999
Posts: 21,953
Likes: 1,445
From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Aluminum heads threads strip very easy if you cross thread a bolt. A cheap $40 or so set of studs makes hanging the gaskets and the pipes on EZ
Really - you can can install a new bronze gear
But the metal flake oil and bronze in the bearings is a little tougher to get out. In motors that you change the oil and filter everyday after using them. To check and change the bronze gear periodicaly is not a big deal. We were forced to use them. But when somebody makes a better unit why not?
Really - you can can install a new bronze gear
But the metal flake oil and bronze in the bearings is a little tougher to get out. In motors that you change the oil and filter everyday after using them. To check and change the bronze gear periodicaly is not a big deal. We were forced to use them. But when somebody makes a better unit why not?
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Thread Starter
Team Owner
Joined: Jul 2001
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From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
When I had my old engine, the only time when I disconnected the headers was when I pulled the engine... There's no reason at all to pull the headers off at any time.. What do I need more than 1 7/8 headers and 4 inch open sidepipes 
Le Mans Master
Joined: Apr 2000
Posts: 7,562
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From: B'Ville NY
Cruise-In III Veteran
St. Jude Donor '05
I went with the bronze gear and I'm glad I did because I found out afterwards that my Mallory distributor gear has the cross-pin hole drilled off center so I had to drill a hole into the new bronze gear for it to fit 
Lookin good GS
Lookin good GS
Melting Slicks
Joined: May 2002
Posts: 2,508
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From: Wisconsin
Originally Posted by GrandSportC3
When I had my old engine, the only time when I disconnected the headers was when I pulled the engine... There's no reason at all to pull the headers off at any time.. What do I need more than 1 7/8 headers and 4 inch open sidepipes
Team Owner
Joined: Apr 1999
Posts: 21,953
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From: Reno Nevada
2024 C3 of the Year Finalist- Modified
Originally Posted by Schmucker
You're not thinking like a racer... don't expect anything to work perfectly forever...
Schmucker - Your right! It just never occurred to me about having a Vette that I never work on. I can safely bet that my Ford 4X4 doesn't have studs.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Originally Posted by GrandSportC3
Well, I'm running open 4 inch side exhaust... Someone might call the police on me...
I believe in a full exhuast for firing a motor so I can hear if something doesn't sound right and shut down before something get too galled.
Looking good
I also like my hearing and too much running around with open side pipes will destroy your hearing. The big questions is how soon, not will it???
Instructor
Joined: Jan 2005
Posts: 117
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From: OKLAHOMA CITY OKLAHOMA
Originally Posted by GrandSportC3
Well, I'm running open 4 inch side exhaust... Someone might call the police on me...
Race Director
Joined: Nov 2000
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Likes: 12
From: Waterloo ontario Canada
Originally Posted by GrandSportC3
I can always change it if it wears too bad...
Race Director
Joined: Nov 2000
Posts: 11,872
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From: Waterloo ontario Canada
Originally Posted by GrandSportC3
That setup was using a spool.. I'm going with the posi setup.. The spool can't really be used on the street. First of all - the car won't turn too well and second it'll wear down the wearings due to very high stress on the axle bearings during turns...
Hope you don't have to open a window.
Race Director
Joined: Nov 2000
Posts: 11,872
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From: Waterloo ontario Canada
Originally Posted by GrandSportC3
Those valve covers are only temporary.. I want to get some fabricated covers.. However - I want covers on which I can re-use my wire looms..
Another good idea is installing studs in the valve covers, well not in the covers but in the head. 1/4 inch extra long set screws screwed only finger tight in the head makes installing valve covers really easy.
Slide the gasket over the studs, holds perfectly, install the cover and use self locking nuts and small washers.
Gaskets never slip.
Le Mans Master
Joined: Apr 2000
Posts: 5,202
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From: cincinnati ohio
St. Jude Donor '09
Originally Posted by norvalwilhelm
If you are using this car on the street and it sound like it how can you get away with open pipes, What about noise pollution, your hearing and annoying everyone else. Open exhausts have no place on the street.
Hope you don't have to open a window.
Hope you don't have to open a window.