suprfast7

Ok I went out and got a dial indicator measured the end play with a V spacer which is 3.157 and I got a measurement of 80 and inside the gauge it says .001" so would that 80 be .080 and does anyone know what spacer I will need now... Thanks

WAYNE88N/A

don't know about the spacer, but the indicator is telling you that each "tic" mark on the scale is .001 (one-thousanth of an inch)...what are the end play limits? give me those numbers & I can help you out with the spacer...BTW, MOST (not all) dial indicators graduated in .001 complete one revolution of the needle per .1, or one-tenth of an inch, so if you're seeing 80 on the gage face, and it hasn't made a complete revolution yet, that would be .08, or eight-hundreths, so you'd be right about that one...

HAILERS

I'm not a professional engine builder......but .080 seems extremely large. I don't have an answer as to why. It seems almost like something was left out OR the eccentric shaft bolt isn't tight.

I put the dial indicator (magnetic base) on the flywheel and let the indicator touch the rear housing then shove back and forth. You probably did something similar.

.080.......that be a big, big figure. Unfortuantly I've never seen that large a figure. Maybe this will get you to the top anyway.

suprfast7

Yeah guys i feel like a real jackass now cause I left the front hub off cause I was cleaning it so that why I had so much slack... the new measurements I got out of it is 0.010 so I probly need a thinner spacer huh does anyone know what to do now

trickfc

the factory manual says .0035 in. max

your reading seems very high at .010

I'm looking at the chart of spacer thicknesses and it does not look like any of them would do

sure you didnt leave out anything else? you torqued the front bolt too?

were the side housings resurfaced???

I've done 2 rebuilds, one w/ resurfaced side housings and one w/out. both end play specs were ok and I didnt have to change spacer

you might want to consult a pro engine builder on this one...

Mike

suprfast7

I had my housing resurfaced but to get that reading of .010 I pryed on the flywheel to get that but with a screw driverI probly would only be able to move it .005or less its like theres little to no play in it now

HAILERS

How about the thinnest spacer and maybe lapping it (the spacer) down to the spec? I'd probably do that. I'm sure others would not. I would.

WAYNE88N/A

wouldn't you think something's not quite right if you have to sand down the THINNEST spacer?

suprfast7

I am getting less than .005 would moving it back and forth by hand its like .003 so shouldnt this be ok

Sponge Bob Square Pants

Are you measuring it while the engine is on a proper stand or lying horizontally? if not then do it one of those ways for a more accurate reading.

There is an awesome write up on the good forum about this. I'm pretty sure it's a STICKY thread in one of the forums.

HAILERS

I've already covered my *** by admitting that I don't know what I'm talking about.......that said, I think he said he rebuilt it right and had the housing lapped which took off some material (duh). And if I was in that situation, I'd lap the spacer you presently have down to meet the slop requirement. It's only a few thousndths that have to be lapped off the spacer.

Ain't no way I'd pull that engine apart. There's not going to be anything that can be corrected by doing that besides buying new housing for little or no gain.

Then again you might call a professional. Maybe Mazdatrix or RacingBeat on one of their non-toll free lines. And kudos for going out and buying a dial indiactor to make things right. Just my very humble opinion.

suprfast7

hey I do appreciate the help but I am going to lap the spacer and see what happens

WAYNE88N/A

Mazdatrix has an assortment of six different spacers for our 86-92's, starting at 8.0mm, the largest being 8.1mm, in increments of .02mm...that means that adjustments can be made at the level of .0008, or 8 ten-thousands of an inch...now, that being said, if the side housings are lapped (effectively making the e-shaft LONGER in relation to the "old" engine), wouldn't you need to go with a THICKER spacer, to make up for the material lapped off? I don't know, maybe I'm not visualizing this correctly...but that's why I said something's not right if you have to sand the THINNEST spacer- you should actually have to use a THICKER spacer, all things being equal...maybe a rebuild guru can straighten me out...

scathcart

Move the flywheel by hand with the engine level. If you pry the flywheel or front counterweight, you aren't checking endplay, merely how far you can bend the thrust plate.

scathcart

This is how you measure this, do NOT pry.

suprfast7

ok moving it by hand and put everything back on and im getting alittle less than .003 so is this good its barely moves