Just gaskets or new heads?

[RobertFord]

Hi all,

I am planning on replacing my head gaskets as I am losing coolant and have yet to find a leak. All the parts are coming in, but I was wondering. If the heads on there are original; would it be worth it/wise replacing the heads if I can get them both for some 300$ in total?

It's a 91 ex with the 90tm heads which as I read, are prone to cracking.

 

[MrShorty]

It seems that, on these engines, it is more common for the heads to crack than it is for the head gaskets to leak. If this were mine, I would just plan on replacing the heads until you know for sure that they aren't cracked.

 

[RobertFord]

Yes, that is what I've heard... the heads I can get are 95tm which would increase the compression ratio from 9:1 to 10:1, would this a) be a problem for the rest of the block, and b) affect mileage?

Of course I am not sure if the heads are cracked, but I cant afford to find out then, and having to wait a week or two until they are delivered. Would all-in-all be a wise decision to upgrade?