anyone lifting heads?
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Joined: Mar 2002
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From: NJ
anyone lifting heads? are you guys still lifting heads with high boost? Has this been fixed with lockwire gaskets, or did you guys try the 6.0 block to fix this? Looking for a block for my project car and want to know if i should look elsewhere...
Re: anyone lifting heads? The general issue hasn't been the block per say, but more the strength of the head itself. Seems the head will flex between the bolts.
when i tore down my stock longblock earlier in the year, there were small signs of combustion getting by the gaskets. But only on the head side of the gasket
http://harlan-engineering.com/teardown/107-0708_IMG.JPG
http://harlan-engineering.com/teardown/107-0709_IMG.JPG
http://harlan-engineering.com/teardown/107-0711_IMG.JPG
http://harlan-engineering.com/teardown/107-0712_IMG.JPG
http://harlan-engineering.com/teardown/107-0713_IMG.JPG
I never fully lost the gaskets in that motor. And I pushed it very hard. over 13 psi at times.
I've since gone to 6.0 heads on the stock block, studs, and the new OEM MLS gaskets. I had to tear it down due to bearing failure. but on the current setup, i've been to 14 psi with no sealing issues at all. time will tell on the rebuild next week.
when i tore down my stock longblock earlier in the year, there were small signs of combustion getting by the gaskets. But only on the head side of the gasket
http://harlan-engineering.com/teardown/107-0708_IMG.JPG
http://harlan-engineering.com/teardown/107-0709_IMG.JPG
http://harlan-engineering.com/teardown/107-0711_IMG.JPG
http://harlan-engineering.com/teardown/107-0712_IMG.JPG
http://harlan-engineering.com/teardown/107-0713_IMG.JPG
I never fully lost the gaskets in that motor. And I pushed it very hard. over 13 psi at times.
I've since gone to 6.0 heads on the stock block, studs, and the new OEM MLS gaskets. I had to tear it down due to bearing failure. but on the current setup, i've been to 14 psi with no sealing issues at all. time will tell on the rebuild next week.
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Joined: Mar 2002
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From: NJ
Re: anyone lifting heads? i will be pushing it further than 12 psi. Its a full race motor, looking for 1200+ hp with FI. I really like the LSX platform, but i'm not sure the heads are going to stay on.
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Re: anyone lifting heads? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by y2khawk:
<strong>I had to tear it down due to bearing failure. but on the current setup, i've been to 14 psi with no sealing issues at all.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Matt-
Bearing failure!?! Is that the motor that the motor you just finished? The "Kitchen Motor"? Whahapen??? <img border="0" alt="[whiner]" title="" src="graemlins/gr_cry.gif" />
I'm sorry man. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
SC-
BTW: Gimme a call when possible. I'll do the leg work, if you have the parts "in stock".
thx
<strong>I had to tear it down due to bearing failure. but on the current setup, i've been to 14 psi with no sealing issues at all.</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Matt-
Bearing failure!?! Is that the motor that the motor you just finished? The "Kitchen Motor"? Whahapen??? <img border="0" alt="[whiner]" title="" src="graemlins/gr_cry.gif" />
I'm sorry man. <img border="0" title="" alt="[Sad]" src="gr_sad.gif" />
SC-
BTW: Gimme a call when possible. I'll do the leg work, if you have the parts "in stock".
thx
