NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   THE QUEST FOR 500 (https://www.nopistons.com/3rd-generation-specific-18/quest-500-a-76052/)

flacorotary 02-01-2012 10:10 AM

Re: THE QUEST FOR 500
 

Originally Posted by JBs93FD (Post 851766)
so i just called my engine builder to get a build sheet , I was under the impressionthat the engine was 700 hp capable and its got every thing there to do it except it doesnt have studs or dowels? i just started noticing a little puff of white smoke on start up . possible coolant seals hurt .


dowel has nothing to do with the water seals.

JBs93FD 02-01-2012 05:24 PM

Re: THE QUEST FOR 500
 
The builder was saying that on high boost rotarys the housings start to move around a lot , he said he could visibly see the housings chattering and the dowls worn out . He said if the housings lift it give more of a chance for exhaust gas to destroy the water seals ? I haven't had a rotary apart but I guess I will soon get the plesure of taking one apart

flacorotary 02-01-2012 07:28 PM

Re: THE QUEST FOR 500
 

Originally Posted by JBs93FD (Post 851782)
The builder was saying that on high boost rotarys the housings start to move around a lot , he said he could visibly see the housings chattering and the dowls worn out . He said if the housings lift it give more of a chance for exhaust gas to destroy the water seals ? I haven't had a rotary apart but I guess I will soon get the plesure of taking one apart


ehh well you can say but im sure play on the dowel will crack the plate quick
specially you having ignition problems

JBs93FD 02-06-2012 08:55 AM

Re: THE QUEST FOR 500
 
Problem solved ! I put the bur9eq's in the leading and ngk 6725's in the trailing . The car is crisper than ever and boost comes on 1000 rpm earlier.

flacorotary 02-06-2012 10:37 AM

Re: THE QUEST FOR 500
 
awesome. get it on the dyno again and see

xlr8 03-06-2012 04:25 PM

Re: THE QUEST FOR 500
 
Updates?

JBs93FD 03-11-2012 04:29 PM

Re: THE QUEST FOR 500
 
the plugs were not the cure. shortley after the car started to smoke (burning oil) what i was seeing on the plugs was oil not gas , the front rotor was worse than the rear. during the teardown there was standing oil in the #1 housing and te control ring wearing surface was almost completely shiny on the front rotor, much more than the .020 allowed . so why are they so worn? not replaced during rebuild? side plates too worn (.010 wear at the side seal wear pattern on the combustion side)? e-shaft endplay? oil contol ring clearence? I sent the side plates out to rb to get lapped and ordered a new set of control rings with seals,I plan to reassemble with the fresh housings and control rings also checking all clearences since im a little worried about the builder i chose .

JBs93FD 03-11-2012 04:47 PM

Re: THE QUEST FOR 500
 
2 Attachment(s)
oil ring

JBs93FD 03-11-2012 04:54 PM

Re: THE QUEST FOR 500
 
2 Attachment(s)
rotor #2

JBs93FD 03-11-2012 04:59 PM

Re: THE QUEST FOR 500
 
2 Attachment(s)
side housing


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