compression and tranny questions

tech · 10-13-2007, 02:30 AM

wondering if i do a compression check what the compression should be on my stock 5s also wondering if my 5s tranny will bolt onto a 3sgte mtor or would it be better to get a lsd tranny, and can i use my 5s mounts on a 3s swap any help would be great

Weasy2k · 10-13-2007, 01:23 PM

Compression (off the top of my head) should be around the 180-190 range but CAN be as low as 160 but if its that low i would consider the engine worn out anyway. Also if there is more then 5-10psi difference between cyls then something is wrong.

5s tranny will bolt to 3s yes they are not as strong but unless your talking over 400hp then i dont see a problem. If you get a 3s tranny then you need to replace the rear tranny mount as they are different.

10-13-2007, 02:30 AM	#1 (permalink)
tech No Skills Join Date: Oct 2007 Posts: 25 Thanks: 0 Thanked 0 Times in 0 Posts iTrader Rating: (0/0% )	compression and tranny questions wondering if i do a compression check what the compression should be on my stock 5s also wondering if my 5s tranny will bolt onto a 3sgte mtor or would it be better to get a lsd tranny, and can i use my 5s mounts on a 3s swap any help would be great Last edited by tech; 10-13-2007 at 02:40 AM..

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10-13-2007, 01:23 PM	#2 (permalink)
Weasy2k What is an MR2? Join Date: Mar 2005 Location: Vancouver, BC Posts: 8,891 Thanks: 33 Thanked 82 Times in 68 Posts iTrader Rating: (9/100% )	Compression (off the top of my head) should be around the 180-190 range but CAN be as low as 160 but if its that low i would consider the engine worn out anyway. Also if there is more then 5-10psi difference between cyls then something is wrong. 5s tranny will bolt to 3s yes they are not as strong but unless your talking over 400hp then i dont see a problem. If you get a 3s tranny then you need to replace the rear tranny mount as they are different.