North American Turbocoupe Organization



Well I threw a rocker, 3 to be exact
TurboDerek Offline
Member
#1
due to a bad 3-4 shift that ended up a 3-2 shift I threw 3 rockers and one is broken in half. Before i knew this. I saw I had a broken timing belt, after replacing that setting time, and doing a compression test for good measure(came out 120-130 across all cyls.) I still had no start
then pulled the valve cover to discover this. My main questino is if I had bent something int he head, I wouldnt have good compression would I? Is it safe to throw in my new lifters/followers and go on if my compression was good?
thanks,
tc in pieces
Derek
88 TC 5 spd, bb t3/t4 50 [email protected], bob log and intakes, fm gn intercooler, Spec stage 3, B&M ripper short throw, RW adj cam gear, Bosch BPV, Warblo 255lph hp, kirban afpr,9in k&n, full 3in exhaust, 245-50's all around nittos in back
87 TC 5spd, light blue 139k, stock only mod ABS delete and vacuum booster in place
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Pete D Offline
Administrator
#2
Which rockers came off, intake or exhaust or some of each. If it was intakes, how did you get 120-130 compression on those cylinders?

What did the tach read when you let out the clutch? Inquiring minds want to know [Image: biggrin.gif]

Install the new parts and then turn the engine over SLOWLY, BY HAND. Look for any sign of binding as the affected valves open and close. If you bent anything, it would be the upper end of the valve, what you see with the valve cover off. You would not have bent the valve head end, on a piston, because these are non-interference motors unless you are running a really big cam.
Pete Dunham


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TurboDerek Offline
Member
#3
the tach was well pegged I'd say 7.5k ish, I kinda panicked and didnt get a good look as I was passing a slow moving semi on a country road with oncoming traffic, and it was 3 exhaust not intake.
88 TC 5 spd, bb t3/t4 50 [email protected], bob log and intakes, fm gn intercooler, Spec stage 3, B&M ripper short throw, RW adj cam gear, Bosch BPV, Warblo 255lph hp, kirban afpr,9in k&n, full 3in exhaust, 245-50's all around nittos in back
87 TC 5spd, light blue 139k, stock only mod ABS delete and vacuum booster in place
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TurboDerek Offline
Member
#4
wel got it back together today with my ranger rolller I've been waiting to put in and it runs good. went for a small test drive and still got 18 psi with no pinging only problem is the rubber valve cover gasket keeps slipping out on the front of the head exhaust side,, any tricks for that?? I put some rtv and let it dry ont here but it still didnt stick

[This message has been edited by TurboDerek (edited 08-29-2004).]
88 TC 5 spd, bb t3/t4 50 [email protected], bob log and intakes, fm gn intercooler, Spec stage 3, B&M ripper short throw, RW adj cam gear, Bosch BPV, Warblo 255lph hp, kirban afpr,9in k&n, full 3in exhaust, 245-50's all around nittos in back
87 TC 5spd, light blue 139k, stock only mod ABS delete and vacuum booster in place
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Pete D Offline
Administrator
#5
Check to make sure the valve cover is flat. If th eproblem is at the cam tower, make sure the gasket is laying on the cam tower in the proper postion then drop the VC straight down over it
Pete Dunham


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Walsted Offline
Posting Freak
#6
How is your PCV valve? The valve cover gasket on my XR7 would blow outward before I replaced a bad PCV valve.

Hope this helps.

------------------
Mike Walsted - NATO member
1986 5-speed TurboCoupe and 1985 5-speed XR7
Mike Walsted - Sold my 1986 5-speed TurboCoupe
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