87 to 92 supra blocks

needing_a_supra · 12-22-2004, 05:28 AM

are the 87 to 92 supra blocks aluminum or cast iron? ive noticed on every site people complaining about head gaskets and usually aluminum heads on a cast iron block will cause the head gasket to blow or leak. and is it a posi track rear end (both back tires spin not just 1)?
thanks

briananh · 12-22-2004, 05:40 AM

yes, the block on that year supra in cast iron. Typically, the head gasket blows because of the lack of cooling of cylinders 5 and 6. bad engineering for that head. I've heard a story about some owners using the old style head. 5m or the 6m. better flow and cooling, not to sure

the_fallen · 12-22-2004, 07:31 AM

the blowing head gasket problem was not due to head design faults, was due to torque settings not being high enough. retorque the head and you don't have a bhg problem.

suprra_girl · 12-22-2004, 10:04 AM

12-23-2004, 07:47 AM

Quote:

Originally posted by briananh@Dec 22 2004, 05:40 AM
yes, the block on that year supra in cast iron. Typically, the head gasket blows because of the lack of cooling of cylinders 5 and 6. bad engineering for that head. I've heard a story about some owners using the old style head. 5m or the 6m. better flow and cooling, not to sure

:unsure: Thats just wrong :wacko:

Try head studs

12-22-2004, 10:04 AM	#4
suprra_girl 7M POWAH! ;) Join Date: Jun 2004 Location: New Zealand Posts: 2,312	__________________ Please use the forum to ask your questions as they will get replied to much faster than pming me Pics of my build. "Good girls are just bad girls that don't get caught" Do a diagnostic first!

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12-22-2004, 05:28 AM	#1
needing_a_supra Stock Join Date: Dec 2004 Posts: 1	are the 87 to 92 supra blocks aluminum or cast iron? ive noticed on every site people complaining about head gaskets and usually aluminum heads on a cast iron block will cause the head gasket to blow or leak. and is it a posi track rear end (both back tires spin not just 1)? thanks

12-22-2004, 05:40 AM	#2
briananh Stock Join Date: Dec 2004 Posts: 3	yes, the block on that year supra in cast iron. Typically, the head gasket blows because of the lack of cooling of cylinders 5 and 6. bad engineering for that head. I've heard a story about some owners using the old style head. 5m or the 6m. better flow and cooling, not to sure

12-22-2004, 07:31 AM	#3
the_fallen 3" Exhaust Join Date: Nov 2004 Posts: 81	the blowing head gasket problem was not due to head design faults, was due to torque settings not being high enough. retorque the head and you don't have a bhg problem.