JasonL

Finally tore down my 90 N/A's engine...

Well, looks like my front rotor lost a apex seal and took out a few chunks of the rotor and rotor housing. Questions:

-Can I use a rotor housing from a S4 N/A or are they different?

-What are my options for buying a rotor and rotor housing? New/Used etc?

-Where to order gaskets and other parts to reassemble?

-Can a machine shop fix the housing?

Arrrg, well at least it's apart, and I touched my first rotor

Everything else looks good.
_________________
Jason
90 Red Base: 1 Dead Rotor, Pulled engine,rebuilding it at school, wish me luck
88 10th AE, winter project, running fine, body work next, soon to be eating pickup trucks all over town!
86 Cherokee, no aircare, no cats,daily driver

darkwaveboi

due to the clearance with the rotor and compression, you cant resurface the housing

Buying a used housing will render longer break in time, overall less compression.

Gaskets and such can be boughten from mazdatrix/atkins/pineapple racing i believe just to name a few.

rxseven

s4 N/A rotor housing has a slightly different spark plug location, so you really ought to get an s5 housing. There are plenty of shops or private people selling engine parts. You can easily find a used one in great shape for less than $150.

ponykiller

s4 and s5 housings cannot be used together, because the sparkplug holes are not the same. If you ever get the chance to look at two next to each other, see how the plug holes do not have the same distance between them. That would completely screw up the timing.

ponykiller

So you can type faster than me...

JasonL

Ok guys, I'll check out the forsale section, maybe get lucky and find a used rotor and housing. I'm only doing it to sell it but I also don't want to do a cheap job.

dr0x

I know kevin usually doesnt like to sell rotors/housings (because they are wear items I guess), but its worth a shot. hypntyz7 or soemthing.

rotary>piston

how much compression can you get from a used housing? Like 90% of brand new? More? Less?

silverrotor

iTrader: (1)

Thats dependant on wear, really.

banzaitoyota

www.rotaryavition.com has good prices on rebuild kits. Don't forget to call Brian At www.mazdaformance.com Great prices, vast knowledge and a Forum Sponser

JasonL

I found a guy off thepartstrader.com with a 89 rotor and housing in good shape for $110usd, sound like a good deal?

banzaitoyota

bad link

www.rotaryaviaton.com

110 sounds decent

JasonL

I think I"m going to go with rotaryaviations basic overhaul kit. Are corner seals, side seals, and rotor oil seals reusable?

banzaitoyota

Sometimes, remember side seals are reaponsible for 50% of your compression