montana tom

Thanks Fairtax; That was the information I needed. I'll just fix the set of 2.5 heads .

Thanks for the reply's guys ; Modifying a head gasket seems easy enough but ...What is the difference in the heads that will cause a cel problem in a 2000 + ? Everything (intake ) would be swapped from that year car. A lit CEL wont bother me on a car that is sure to have 200,000 + miles on it... but i'm curious how heads alone would cause an issue.

OMG !!! Disconnected the heater core !!! ...You won't see that around here... If your losing coolant you probably have a hose leaking . The previous owner probably used one old heater hose to connect back to the other pipe. That is the first place to look . Under the dash wont help if the core is disconnected. The small rubber hoses connecting to the intake manifold are another good place to check. If all else fails go to a local mechanic and ask him to put the pressure tester on and bring it up to pressure with the engine off, makes it much easier to spot small leaks that way. The engine must be cool enough to open the rad cap when you bring it to him. Or go to harbor freight and buy a cheap one and do it yourself !

Hi all; First post, 30 year subi owner. I have a good short block 01-2.5 sohc. I could buy valves and repair the original heads... But since finding this forum I'm hearing about using 2.2 heads. Just so happens that I have 2 sets for sure and maybe another in the motor barn. All from the early 90's .I have read that they do not flow as well as later models, but slightly increase compression. Will they bolt on and work ? I'm not wanting a race car ...(well at least not this one ) Just wanting to put together an extra engine on the cheap ,in case one of ours decides to be a problem.