Okay I have replaced the gasket twice, bought a flat cap from MazdaTrix and still a tiny bit of leaking under the cap on my Therostat neck.



Does anyone have a spare for sale? One without the flat cap? (I think 89-91 Turbo Style).



My Zuki is pulling pretty hard in all the gears. I've run it about an hour each weekend. With the 5:13 rear gears 1st gear goes by really quick. I think I should locate some 4:60 rear gears.



I bought a G-Tech but haven't made a run with it in my Zuki yet. My only complaint of the product is it would have been nice to have a remote switch for setting it up. Even a remote control. It's a pain to take it on and off the windshield to setup the vehicle's weight.



I did make a run with it in my daily driver and it seemed pretty accurate. It said I had 116HP, Which I am suppose to have 140HP at the flywheel. Figuring the 20% driveline loses that sounds about right.



Anyone have the specs from the New Mazda motor?... I'm sure I am getting off topic here, but the Renesis is suppose to have NO OVERLAP. HOW DID THEY DO THAT?



That and 3 seperate dynamic chambers give it all that power without the aid of a Turbo.

 

I have an extra 89-91 thermostat housing, but I don't think it will bolt right onto your water pump housing.

 

I've got 2 bolts that hold mine on. The Thermostat sits under it.



As for the Renesis I think I answered my own question. I had no idea.... Side Exhaust Ports. I wonder when these performance housing will be avalible for the 13B world.

 

The 89-91 neck uses 3 bolts, and the thermostat has a rubber gasket around its edges. If that neck is causing you so much trouble you could try just getting the hole welded shut.

 

Ya that's an idea. I think it would look like SH*& but I guess better than it leaking. 3 bolts do seem better than 2.

 

Just cut a piece of flat aluminum to cover the hole and have it welded. It should look ok. Otherwise you can try to figure out why your caps keep leaking.