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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 12-28-2008, 11:47 PM   #21
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Ae those not metal gaskets usualy? Seems like the cork/rubber ones wouldnt hold up to the heat very well.

Not to jack the thread, but its related to the clutch and grease question. Ive always been scared to use much grease on the splines and around the pilot bearing for fear of it slinging onto the disk and hurting the clutch. Out cars use a sealed pilot bearing, so is it necessary to pack any grease in to the space behind the pilot bearing in the void in the end of the crank? I cant really picture in my head is that even seals up when the input shaft is in. Im going by how RX7 input shafts used an open needle bearing ,and the end of the e-shaft had to be packed with grease to keep the bearing from running dry.

I ask because right away with my new clutch (ACT HD) I had some noise. I think its probably the t/o bearing, not the pilot, but Im not sure as to why. Maybe I should grease the fork really well, and make sure everything looks perfect. Anybody ever found the need to replace the fork? Mine doesnt look bad.
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Old 12-28-2008, 11:52 PM   #22
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Originally Posted by NA6C-Guy View Post
Ae those not metal gaskets usualy? Seems like the cork/rubber ones wouldnt hold up to the heat very well.

Not to jack the thread, but its related to the clutch and grease question. Ive always been scared to use much grease on the splines and around the pilot bearing for fear of it slinging onto the disk and hurting the clutch. Out cars use a sealed pilot bearing, so is it necessary to pack any grease in to the space behind the pilot bearing in the void in the end of the crank? I cant really picture in my head is that even seals up when the input shaft is in. Im going by how RX7 input shafts used an open needle bearing ,and the end of the e-shaft had to be packed with grease to keep the bearing from running dry.

I ask because right away with my new clutch (ACT HD) I had some noise. I think its probably the t/o bearing, not the pilot, but Im not sure as to why. Maybe I should grease the fork really well, and make sure everything looks perfect. Anybody ever found the need to replace the fork? Mine doesnt look bad.
Dunno, but if I had to guess, it's usually a metal gasket. Cause this one sucks. It about has to be metal.

As for the thread jack , I dunno. The pilot bearing on a miata is sealed, so no grease is needed. Honestly, my pilot bearing was in rough shape. Worn. I should have changed it. Then again, I should have changed the T/O bearing too, even though it seemed ok. But so far, it's working fine just like before. I put just a little grease on the spline and disk before assembly, as you know most of it will sling off at the first 7K RPMs. Also greased all the fulrum points for the forks, etc.
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Old 12-28-2008, 11:59 PM   #23
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I guess this next time I will just take my trusty wire wheel to the slightly rusted input shaft, and clean the fork up really well and use my awsome home made grease forumula, which is a secret recipe Worked well last time, not sure why I didnt do it this last time. Its something like 1/2 grease and 1/2 powder graphite. Its thicker and seems to hold up to slinging very well. when I pulled my RX7's trans a second time, most of it was still holding on to the input shaft, and was still caked on the clutch fork and ball assembly. I like graphite alot. Not really a secret now either, though Im sure Im not the only one who does this. Im sure some or most grease already has graphite in it, but this is a bit extra.
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Old 12-29-2008, 12:32 AM   #24
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Mine is a cork gasket.
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Old 12-29-2008, 08:30 AM   #25
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+1 on DEI heat tape. $14 at advanced!! I am happy with it on my brake lines but I really regret using it on my water hose. It has held up great so fat but if I get a leak it will be nearly impossible to see. DEI also makes a sleeve that you can buy that just slides over.
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Old 12-30-2008, 02:47 PM   #26
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Ok, what the hell. I can NOT get these RC 550's to seal into the cylinder head. For the 3rd. time, I redid the O-rings, hoping this time it would seal. Before I was getting an idle of ~1500 as they leaked. Well, it's at 2800 now. :( I'm at a loss. I need to fix this now. Gonna pull them out one more time I guess and try again. Bout to dround them in JB weld...
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Old 01-04-2009, 04:11 PM   #27
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Ok, what the hell. I can NOT get these RC 550's to seal into the cylinder head. For the 3rd. time, I redid the O-rings, hoping this time it would seal. Before I was getting an idle of ~1500 as they leaked. Well, it's at 2800 now. :( I'm at a loss. I need to fix this now. Gonna pull them out one more time I guess and try again. Bout to dround them in JB weld...
Finally got them to seal into the cylinder head. Though I had this whipped.

Driving down the road and I smell GAS. Get to the house, pop the hood with it running, and there's a stream of gas pouring from injector 1 onto the alternator. Kill it, shut the hood, get the water hose, and wait for it to all boil off. No fire thank god.

But seriously WTF? Is there so secret to installing fuel injectors? I just did a complete custom turbo kit in 10 days and not a single hickup anywhere except the fuel injectors just refuse to stay sealed. This is like the 6th or 7th time I'm going to remove them to fix a leaking o-ring. Though this is the first time it's leaked where they go into the fuel rail.

But yeah, any advice is appreciated. This SUCKS!.
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Old 01-04-2009, 07:52 PM   #28
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I've never been able to put out a gas fire with water =P Get yourself a real fire extinguisher.

I dont know wtf is up with your leaky injectors though. Have you tried a bigger (thicker) o-ring? You've got me concerned for when I install my 550s.
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Old 01-04-2009, 08:00 PM   #29
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I've never been able to put out a gas fire with water =P Get yourself a real fire extinguisher.

I dont know wtf is up with your leaky injectors though. Have you tried a bigger (thicker) o-ring? You've got me concerned for when I install my 550s.
Just put in a thicker o-ring and ran it for ~2 minutes and it's not leaking. Time will tell if it works. God I hope it works. And yeah, fighting a gas fire with water is almost impossible. I've done it twice before, and it's hard. Water and a blanket works well though.
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