Rebuild or new assembled short block?(longer)

Rick 91GT · 01-27-2001, 07:30 PM

Kevin, to do the compression test you need to get a compression tester, pull all the plugs, the tester goes into the plug hole in the head, you turn the motor over and take a reading, then you put a little bit of oil in the plug hole maybe a tsp tops then put the gauge back on and turn it over agin, if the compression goes up it the rings if the compression goes down it the valve guides.

I think you are probably fine but do the compression test to get a idea of whats up, your factory valve guides maybe weak, we took the heads off my dads 93 Cobra at 40M miles and he had two bad valve seals and some weak valve guides and the car had never been driven hard. If the car has been taken care off with constant oil changes you should be fine, do the test and bolt on those GT40p's and have at it. Are you swapping cams at the same time?

------------------
My Ride Check Out My Site 91GT, Holley SysteMAX II Kit-Heads 2.02" x 1.60",Full MAC exhaust 1-5/8" Long tubes, 2-1/2" O.R H-Pipe, 2 1/2" cat back, 12" K&N Filter, RNH PERFORMANCE Ram Air, Ron Davis Radiator, Full Suspension,3:73's, Welds, Best on new motor-12.60 @ 108, no traction 1.98

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
rebuild vs stroker short block	Dave_mustang_50	Windsor Power	6	01-08-2003 02:07 PM
Need advice on where to buy a 302 short block.	yelowjaket	Blue Oval Lounge	1	01-03-2003 01:17 PM
T-5 Rebuild	95/GT/5.0	Windsor Power	9	12-26-2002 10:23 PM
TRANS rebuild kits for 5spd	drtbiker	Windsor Power	3	08-18-2002 04:25 PM
Short block prep for supercharger	Tony91LX	Windsor Power	2	01-16-2001 10:06 PM

01-27-2001, 07:30 PM	#3
Rick 91GT Procharged! Join Date: May 1999 Location: Hanover, PA Posts: 1,539	Kevin, to do the compression test you need to get a compression tester, pull all the plugs, the tester goes into the plug hole in the head, you turn the motor over and take a reading, then you put a little bit of oil in the plug hole maybe a tsp tops then put the gauge back on and turn it over agin, if the compression goes up it the rings if the compression goes down it the valve guides. I think you are probably fine but do the compression test to get a idea of whats up, your factory valve guides maybe weak, we took the heads off my dads 93 Cobra at 40M miles and he had two bad valve seals and some weak valve guides and the car had never been driven hard. If the car has been taken care off with constant oil changes you should be fine, do the test and bolt on those GT40p's and have at it. Are you swapping cams at the same time? ------------------ My Ride Check Out My Site 91GT, Holley SysteMAX II Kit-Heads 2.02" x 1.60",Full MAC exhaust 1-5/8" Long tubes, 2-1/2" O.R H-Pipe, 2 1/2" cat back, 12" K&N Filter, RNH PERFORMANCE Ram Air, Ron Davis Radiator, Full Suspension,3:73's, Welds, Best on new motor-12.60 @ 108, no traction 1.98