I have a 89 civic si with a d15b2 and mpfi. My question is regarding the thermostat housing. The stock fan switch doesn't work anymore and a local shop suggested switching thermostat housing's. I already switched the cover and added a new obd1 style switch. It seals but doesn't look right. Is it possible to switch the entire housing and not have any leaks?

 

Iv switched housings and havnt had any issues

I used that blue gasket maker and its been fine

 

Thanks I got it on yesterday. If anyone plans to do this it is wise to remove the bolts from the pcv canister to give room for the housing to set in place. I also replaced the factory rubber o ring as well.

 

Didnt it come with d16a6? Probably not an Si

 

Dont ask me what engine I have. The car obviously had a swap to d15b2 at some point. The car is an si and your post is useless.

Mods please close thanks.