Chapter GMW | E30 LS1 (starting on post #1427)
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Say the downpipe is 3" O.D. and is 304 stainless, it would only grow 0.010" radially at 700F. Compound that with the expansion of the turbine housing, manifold, block, head, and strut brace and (without actually doing the calculations) you might be approaching 0.090" total expansion. I would suspect the engine is shifting back and forth on the engine mounts, yes even the solid mounts.
Make sure the rubber buffer #15 is installed. It slams up against the back of the subframe under braking so the engine mounts dont have to restrain the powertrain longitudinally all by themselves.
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Say the downpipe is 3" O.D. and is 304 stainless, it would only grow 0.010" radially at 700F. Compound that with the expansion of the turbine housing, manifold, block, head, and strut brace and (without actually doing the calculations) you might be approaching 0.090" total expansion. I would suspect the engine is shifting back and forth on the engine mounts, yes even the solid mounts.
Make sure the rubber buffer #15 is installed. It slams up against the back of the subframe under braking so the engine mounts dont have to restrain the powertrain longitudinally all by themselves.
That was deep, breh!! Great info and thought process.
I don't think I've ever seen that bracket! You got to love previous owners.
Thanks for the info.
@DrLeadFoot
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While waiting for parts to arrive.
Happy Thanksgiving!
@DrLeadFoot
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do you shoot most of these with your phone?
because if so... damn.
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do you shoot most of these with your phone?
because if so... damn.
Haha. The Samsung isn't that good. I got a canon t2i with an upgraded lens.
Looks fantastic!!!
Thanks!!
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@DrLeadFoot
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Got some new plugs.
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@DrLeadFoot
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1500 miles on these plugs.
I got the new ones all pointed EXACTLY with the open end pointed away from the intake to help reduce spark blow out. Gapped exactly to .021 and yes I did double check! No breakup at all!! She good.
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@DrLeadFoot
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1500 miles on these BOUGIES
I got the new ones all pointed exactly with the open end pointed away from the intake to help reduce spark blow out. Gapped exactly to .021 and yes I did double check! No breakup at all!! She good.
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Snap hooked it up with his smoke tester and my system looks to be good with exception on my turbine housing. That is leaking very badly. I have a video of it on instagram @drleadfoot
@DrLeadFoot
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O-ring bad I assume?
The turbo has 2100 miles on it. I hope it isn't going to blow them out that fast. High temp RTV sealant? Some guys have done this with good results from a brief google search.
@DrLeadFoot
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glad to see you found/confirmed your leak. you must have been burning some low-grade leaves otherwise you wouldnt have needed the water spritzer.
You should see my garage. There are too many fire hazards to whip up a bonfire. I tried but I don't think I have any leaks except for the turbo cold side. (Video on instagram. Here soon.) Once my silicone dries up tomorrow I'll smoke the turbo side and see is she puff. #ifshesmokesshepokes
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@DrLeadFoot
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You should see my garage. There are too many fire hazards to whip up a bonfire. I tried but I don't think I have any leaks except for the turbo cold side.
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Todd, TCD, came by the garage the other day and put my mind to ease about the leak. Everything is a-ok!
Now do I boost it up?!? What to do...what to do... If I do change the spring I'll out in a 20lbs one in there.
@DrLeadFoot
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check the compressor map. I know absolutely nothing about turbos but, check the compressor map.
I think we are in the same boat.
Here is the map for my turbo. This is a foreign language for me. HELP!
@DrLeadFoot
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Looks like 2 Bar (29psi) would be my optimum boost for the turbo? That's 14psi more than I'm at now.
Oh god if this is right this will be crazy!!
@DrLeadFoot
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