cant be sure. the motor came in may and i dropped it in my spec for a race i was proly already late on :)
-Blake On Wed, Oct 7, 2009 at 3:08 PM, JON USHER <[email protected]> wrote: > I've heard of rust problems before with crate motors. Are you sure you > didn't have rust to begin with? > > -Jon > > > > --- On *Wed, 10/7/09, Blake Thompson <[email protected]>* wrote: > > > From: Blake Thompson <[email protected]> > Subject: Re: 2008 Crate head failure > To: "<[email protected]> <[email protected]>" < > [email protected]> > Date: Wednesday, October 7, 2009, 12:37 PM > > > I spoke with Stewart today and they said EVERY valve had rust on it. I'm > wondering if I got bad gas that was full of water? > > On Mon, Oct 5, 2009 at 3:52 PM, Jason C > <[email protected]<http://us.mc841.mail.yahoo.com/mc/[email protected]> > > wrote: > >> Lack of lubrication in the valve guides? >> >> >> >> >> >> Larry Alster >> >> 91 Miata White Knight >> 92 Miata Silver Bullet >> 92 Miata Honey B >> 04 MSM MX-5 Whooosh >> 06 WRX STi Subie >> >> *From:* >> [email protected]<http://us.mc841.mail.yahoo.com/mc/[email protected]>[mailto: >> [email protected]<http://us.mc841.mail.yahoo.com/mc/[email protected]>] >> *On Behalf Of *Blake Thompson >> *Sent:* Monday, October 05, 2009 1:19 PM >> *To:* >> <[email protected]<http://us.mc841.mail.yahoo.com/mc/[email protected]>> >> <[email protected]<http://us.mc841.mail.yahoo.com/mc/[email protected]> >> > >> *Subject:* 2008 Crate head failure >> >> wtf did i do this thing after only 10 races? Any ideas? >> >> Cylinder 4 - exhaust valves unseated >> http://btdtracing.com/gallery/d/10706-2/head2.jpg >> Cylinder 1 - exhaust valve extended or bent: >> http://btdtracing.com/gallery/d/10703-2/head.jpg >> >> Labor day weekend (a month ago, now) I raced. The car performed well, I >> didn't notice any power issues. I brought the car home and parked it. >> About two weeks ago I started and it sounded like shit, like it was running >> on two cylinders. I assumed the coil had GTSd. I didn't bother with it >> until this weekend when it wouldn't start at all. I started with the CAS >> then the Coil then the ignitor before I got it running again, but she still >> ran like shit. >> >> So I started a leak down. Cyl 1 - 30%, Cyl 4 - 100% (yes, on the >> compression stroke). Attached is a picture of the exhaust valve in cylinder >> 1. Cylinder 4 it looks like both valves are out about 1/16" or more. >> Cylinder 1 is at least 3/16" >> >> So the head is off my car, on its way to Gasoline alley. But my question >> is, *what did I do to cause this?* I've not missed a shift and I dont >> rev past the limiter. The motor is a Mazda crate which I bought in May of >> last year. It has maybe 10 races on it. I run Royal Purple XPR 10w30 (i >> think, off the top of my head) in the car and religiously change the filter >> every race and oil every 2. >> I noticed my header was cracked as well, i donno if this was the cause >> or the result of bad valves. >> >> The valve springs look fine and dandy, all operating well, the cams move >> smoothly. The valve, however, is very stiff and I couldn't move it with my >> bare (bear!) hand, nor did it move when i rotated the cam. >> >> There is a picture attached of cyl 4 here, the ex valves again are the >> ones in question, they don't seem to be seated properly. I have a feeling >> one of the cylinders has been screwed for a while >> >> To answer your other questions, the AFM is untuned and I thought I was >> using a pretty conservative timing. I ran 87 for practice and qual at the >> mile and then switched to 110 from a nearby pump for the race. I typically >> run whatever the track gas is but that wasn't available at the mile. >> >> BTW, this is a 90 spec miata with a 1.6L crate bought from mazda in May >> of 2008. It's got maybe 1000 miles on it, 400 of which were break in miles >> on the interstate :p >> >> -Blake >> SM#97 >> >> -- >> http://BTDTRacing.com <http://btdtracing.com/> - World Champion Miata >> Parts Sales. Now in HD! >> >> Our ebay store: http://stores.ebay.com/btdtracing-36 >> or Subscribe to our active listings page: >> http://esssl.ebay.com/GetListings/btdtracing36?fmt=g >> >> This is our decision, to live fast and die young. >> We've got the vision, now let's have some fun. >> >> -----Inline Attachment Follows----- >> >> _______________________________________________ >> Miatapower mailing list >> [email protected]<http://mc/[email protected]> >> http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower >> >> > > > -- > http://BTDTRacing.com <http://btdtracing.com/> - World Champion Miata > Parts Sales. Now in HD! > > Our ebay store: http://stores.ebay.com/btdtracing-36 > or Subscribe to our active listings page: > http://esssl.ebay.com/GetListings/btdtracing36?fmt=g > > This is our decision, to live fast and die young. > We've got the vision, now let's have some fun. > > -----Inline Attachment Follows----- > > _______________________________________________ > Miatapower mailing list > [email protected]<http://us.mc841.mail.yahoo.com/mc/[email protected]> > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > > > _______________________________________________ > Miatapower mailing list > [email protected] > http://list.miatapower.net/cgi-bin/mailman/listinfo/miatapower > > -- http://BTDTRacing.com - World Champion Miata Parts Sales. Now in HD! Our ebay store: http://stores.ebay.com/btdtracing-36 or Subscribe to our active listings page: http://esssl.ebay.com/GetListings/btdtracing36?fmt=g This is our decision, to live fast and die young. We've got the vision, now let's have some fun.
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