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My rebuild thread

Old Oct 15, 2007 | 10:53 PM
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My rebuild thread

Well against all common sense and good judgement I have decided to rebuild my own motor. I tore it down today and found exactly as suspected. The front rotor nuked an apex seal which destroyed the rotor and nuked the front housing. The irons look like they might be ok but I won't know anything for sure until I take some measurements. I planned to have them machined anyway so I guess that's ok, and I planned on replacing both housings also. The rear rotor is in great shape so that's good!
I have to tell you, that front bolt is my arch ******* enemy!! It took an hour and a half combined and a 3/4 " impact to get that god damn thing off, plus I broke 2 impact sockets !! I took a bunch of pics that I'll post tomorrow, I'm too tired to do it tonight.
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Old Oct 16, 2007 | 03:25 AM
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I have to tell you, that front bolt is my arch ******* enemy!!
If I'm thinking of the same one...trying heating it next time and it comes off fairly easy.
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Old Oct 16, 2007 | 08:17 AM
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I did!!! I heated that son of a bitch for 20 mins a clip with mapp gas!!!
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Old Oct 16, 2007 | 09:27 AM
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LOL,, i scratch my head for a day looking at that pulley bolt,,,,broke my 4ft breaker bar (1/2 inch drive,,, i should have known better),, i tried the heating process to no avail,, but somehow got te suker off by using a 4 foot pipe gripper on a socket,,,dont ask
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Old Oct 16, 2007 | 10:10 AM
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Have fun in your rebuild, take your time, measure twice......

On another note...My IR 1/2" impact gets them off, no problem. You need to buy better tools or you need more air....LOL.
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Old Oct 16, 2007 | 11:56 AM
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lol i have a sixty gallon ir compressor that runs on 220 and a half inch ir 2131 that pulls six hundred foot pounds io reverse and it wouldn't do it lol. Oh well time to start measuring the plates.
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Old Oct 16, 2007 | 06:05 PM
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ok here are some pics.
Here is a pic of that evil bastard known as the front bolt.


this is the rear housing looking to be in pretty good shape


the rear rotor is in good shape but I noticed the outer oil control ring was bad so the whole side and 3 faces of the rotor had pretty good oil residue on them


this is the only mark on the rear housing, you can see it but you can't feel it. No worries as I intend to replace it anyway.


Now here is where the problem starts. 1 apex seal was broke and 2 were pushed in. I assume this is what people mean when the talk about a stuck apex seal.


here'a a shitty pic


this is the rotor housing and front plate, the housing is fucked but the plate isn't as bad.





I'll post better pics of the good and bad rotors later.
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Old Oct 16, 2007 | 06:50 PM
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wow, everything is so shiney! so are you going to snag the thermal bypass elimination kit from pineapple since you tourched the front bolt off? what are your plans for your new motor?
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Old Oct 16, 2007 | 09:52 PM
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As far as I know the thermal bypass kit is just some lock washers but yes I'm going to do it. It's going back together factory with the exception of a medium street port.
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Old Oct 17, 2007 | 09:36 AM
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Ok I just took some measurements on the rotor I believed to be good and here's what I got measuring the maz rotor width at the 3 points specified in the manual

point a =3.2000
point b =3.2090
point c = 3.2195

that makes the difference between point a and point c .0195.
If I am reading the manual correctly I am allowed between .0043 - .0083 difference between the 3 points thus making this rotor unusable? I can't wait for bruces video to get here lol.

Edit, I think I misinterpreted. Of those 3 measurements I now believe I am supposed to take the maximum and compare it to the housing width and have between .0043 - .0083 clearance with the minimum usable clearing being .0039. On a side note I am now considering reusing the rear housing if it is forund way within spec.

Last edited by Uncle Hungry; Oct 17, 2007 at 09:42 AM.
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Old Oct 17, 2007 | 09:55 AM
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now I just measured the housing and I got 3.1495. I was under the impression the housing width should be more than the rotor not the other way around. Any info will be appreciated from you veteran rotorheads! Thanks in advance!!!
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Old Oct 17, 2007 | 06:38 PM
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Ok, I just spoke with rob at pineapple and the problem is solved, turns out I'm an idiot and measured the oil control ring. Time for some new measurements!
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Old Nov 16, 2007 | 10:08 AM
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Originally Posted by vtec187
Ok, I just spoke with rob at pineapple and the problem is solved, turns out I'm an idiot and measured the oil control ring. Time for some new measurements!
its ok im a newb too. i probably would have done da same thing.
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Old Nov 16, 2007 | 10:11 AM
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if u need help on the port or run into any other engine problems conact rich ( goodfellasfd3s ) he is my engine builder and moderator on the forum. he is also in jersey.
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Old Nov 17, 2007 | 11:38 AM
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Yeah I've heard nothing but good things about him. Well the irons are at Racing Beat getting lapped and ported. Turns out UPS cracked the rear iron so I just bought a new one with ups's money lol. RB should have the iron's back to me in a few weeks then I'll start worrying about housings..
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Old Nov 18, 2007 | 02:01 AM
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dam tell them to break em all lol
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