I need head porting/polishing for my 1.8l v6... any ideas???

GtownMX3v6 · Post by **GtownMX3v6** » January 10th, 2005, 3:18 pm

I have a 1992 Mazda MX3 with the 1.8L V6. I really wanna get the heads port and polished but I can't find a good place in my area. I live in Nashville, Tennessee... I would be willing to ship my heads so anywhere in the US is fine.

kiwi_MX3 · Post by **kiwi_MX3** » January 11th, 2005, 3:17 am

Porting and polishing the heads of the K8......

Since your willing to pull the heads off yourself, these heads
don't need a lot of work, so a flapper wheel just to tidy up casting
marks and casting core shift around the vavle seat's ...

opening up where the injectors spray is another area that benifits...

Also a good time to get the vavle seats recut.....

lakersfan1 · Post by **lakersfan1** » January 11th, 2005, 9:49 am

If you're not going to do the head work yourself, you might as well just buy a set of KL31 heads and slap those on.

Black Magic · Post by **Black Magic** » January 11th, 2005, 5:42 pm

And since your looking for the kl31 heads, you can also spent another 600 for a complete klze and be done. trust me, it's worth it!!

Bastian

papa roached · Post by **papa roached** » January 11th, 2005, 5:57 pm

or just get a low miles KL-DE and throw in

masonholmes · Post by **masonholmes** » January 12th, 2005, 2:14 am

Pretty sure you can't just throw 2.5L heads on the 1.8L - I'd check into that farther if you're thinking of going that route.

bmwm3guy · Post by **bmwm3guy** » January 14th, 2005, 1:39 pm

i dont see why not. The valve covers and gaskets are identical. However, I would consult with someone who has tried this none the less than have a stupid suprise after you bought ZE heads

papa roached · Post by **papa roached** » January 14th, 2005, 3:59 pm

the combustion chamber sizes will be different so who knows, you might lose some compression

lakersfan1 · Post by **lakersfan1** » January 14th, 2005, 6:29 pm

I know the combustion chambers on my KL head are smaller than the bore of the KL. Looking at the head sitting by my right now, the outline of the old gasket, looks like maybe about 1/4" minimum all the way around? So a 1/2" minimum smaller bore than the KL pistons.

Mnemonic · Post by **Mnemonic** » January 15th, 2005, 3:08 pm

bmwm3guy wrote:i dont see why not. The valve covers and gaskets are identical. However, I would consult with someone who has tried this none the less than have a stupid suprise after you bought ZE heads

::Shakes head:: Head Gaskets arnt the same and the bore is completely different !

If your going to p&p your heads i would go ahead and get a 3 angle valve job done Manley performance has the specs for the 1.8 valves since i had them do my set for the 2.0 *uses the same valves* upgrade to stiffer valve springs and stronger valve stems