Engine rebuilding specs and balancing question.
#16
Nordschleife Master
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Adam,
I think I will definetly have to think about that.
And just to confirm this isnt a stroker crank, it is a 5.0L just having been drilled like a chevy.
Any chance you could get a quote for relapping the valves, checking the guides and getting the bottom end ready to go. I simply just dont have any time these days
I think I will definetly have to think about that.
And just to confirm this isnt a stroker crank, it is a 5.0L just having been drilled like a chevy.
Any chance you could get a quote for relapping the valves, checking the guides and getting the bottom end ready to go. I simply just dont have any time these days
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#17
Nordschleife Master
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Oh and Adam, the ONLY shop in the lower mainland that really does any of this stuff wanted $1k just to regrind the valves and seats. Cost would go up should the guides need to be replaced etc.
As well know anyone in the area that does acid dipping of chassis? One shop locally does it and JUST to dip the tub, they wanted upwards of $10k. And no that does not include anything else, just the dip.
As well know anyone in the area that does acid dipping of chassis? One shop locally does it and JUST to dip the tub, they wanted upwards of $10k. And no that does not include anything else, just the dip.
#18
#19
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There is one remaining acid dipper down here in SoCal, and it was going to be like 2500, but that was 4 years ago.
#20
Three Wheelin'
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Im using the same 951 rings for my S4, I got the OEM ones with part # 08-323300-00. My question is do they need gapping ? some one told me they dont need gapping.
Brenden, were the rings in spec or you had to gap them ?
I never done this before, so please let me know what your experience was with these 951 rings.
Thanks in advance
AK
Brenden, were the rings in spec or you had to gap them ?
I never done this before, so please let me know what your experience was with these 951 rings.
Thanks in advance
AK
#22
Three Wheelin'
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I dont think I will boost any time soon if I decide to do.
#23
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Im using the same 951 rings for my S4, I got the OEM ones with part # 08-323300-00. My question is do they need gapping ? some one told me they dont need gapping.
Brenden, were the rings in spec or you had to gap them ?
I never done this before, so please let me know what your experience was with these 951 rings.
Thanks in advance
AK
Brenden, were the rings in spec or you had to gap them ?
I never done this before, so please let me know what your experience was with these 951 rings.
Thanks in advance
AK
#26
Burning Brakes
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#27
Man of many SIGs
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Can anyone tell me the stem diameter of the valves as well as the length? I found some TRW sodium filled exhaust valves that are the correct diameter but I don't know what to look for regarding the other dimensions.
Porsche TRW W0133-1615007 Exhaust Valve
(TRW - A4050-13414, W0133-1615007)
Price Range: $22.67 - $32.52 from 6 Sellers
Description: 2.0L (Sodium filled, 35.9x117mm).
Porsche TRW W0133-1615007 Exhaust Valve
(TRW - A4050-13414, W0133-1615007)
Price Range: $22.67 - $32.52 from 6 Sellers
Description: 2.0L (Sodium filled, 35.9x117mm).
#28
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#29
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Location: Adelaide South Australia'79 5spd twin turbo
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G'day Colin
I spoke to my engine shop guys. These guys are second generation performance engine builders, they were saying that sodium filled valves are rarely used these days, the only recent engine they were aware of, that uses them is the Nissan RB26DETT, apparently for aftermarket modified engines, the major aftermarket suppliers, Manley etc. use very high spec materials for extreme duty exhaust valves, without issues.
Hope this s of some value to you.
Cheers Roy
I spoke to my engine shop guys. These guys are second generation performance engine builders, they were saying that sodium filled valves are rarely used these days, the only recent engine they were aware of, that uses them is the Nissan RB26DETT, apparently for aftermarket modified engines, the major aftermarket suppliers, Manley etc. use very high spec materials for extreme duty exhaust valves, without issues.
Hope this s of some value to you.
Cheers Roy
#30
Man of many SIGs
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G'day Colin
I spoke to my engine shop guys. These guys are second generation performance engine builders, they were saying that sodium filled valves are rarely used these days, the only recent engine they were aware of, that uses them is the Nissan RB26DETT, apparently for aftermarket modified engines, the major aftermarket suppliers, Manley etc. use very high spec materials for extreme duty exhaust valves, without issues.
Hope this s of some value to you.
Cheers Roy
I spoke to my engine shop guys. These guys are second generation performance engine builders, they were saying that sodium filled valves are rarely used these days, the only recent engine they were aware of, that uses them is the Nissan RB26DETT, apparently for aftermarket modified engines, the major aftermarket suppliers, Manley etc. use very high spec materials for extreme duty exhaust valves, without issues.
Hope this s of some value to you.
Cheers Roy
"The LS7’s CNC-ported aluminum cylinder heads are designed to meet the high airflow demands of the engine’s 7.0-liter displacement. A hydraulic roller camshaft with 0.588/0.593-inch valve lift is used to allow plenty of air to circulate in and out of the engine. To ensure optimal, uninterrupted airflow, the LS7’s heads have straight, tunnel-like intake runners. Very large by production-vehicle standards – even racing standards – they are designed to maintain fast airflow velocity, providing excellent torque at low rpm and exhilarating horsepower at high rpm. The heads feature 70-cc combustion chambers that are fed by huge, 56-mm-diameter titanium intake valves. They are complemented by 41-mm sodium-filled exhaust valves."
Colin, check with TRW. They may have something if you can provide the dimensions. Once you get the dims. please post them here for others ( me ) to use. Here is an explanation of the valves from TRW themselves and it includes some info on the sodium filled exhaust valves. http://www.ms-motor-service.com/down...720_02_web.pdf