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M491/Targa V8/ 550 Spyder
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Lower Compression/ Thicker head gasket??
I have a 85 Euro TL 3.2 and want to either turbo or supercharge, do they offer a thicker head gasket to lower compression?
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Registered
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I think you can adjust the compression a slight amount with head gaskets but not by a lot. Move the height of the cylinder too much and you start to have issues with fitment/alignment of other components like cam towers.
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72 911T 2.4 MFI 2017 Escape SE 2.0 turbo 2020 Honda Civic Touring Sport 1.6 turbo 10' Madone 5.2/17' Lynskey ProCross |
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Skunk works
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There are a number of bolt on turbo kits (search Protomotive for example) that run low boost so you won't need to lower the comp. Having driven one I can confirm they are a lot of fun.
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964 RS-4 |
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M491/Targa V8/ 550 Spyder
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I am a virgin to the porsche engine, I am pulling the heads to have the valve guides replaced and was hoping to lower compression without major work like pistons/rods/crank. Are they running these kits on a 10.3 to 1 compression engine?
I am not looking for alot of boost, maybe 6 psi |
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Skunk works
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6psi is all the bolt on kits run anyway
maybe drop Ben from M&K exhausts a PM (MB911)
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964 RS-4 |
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Registered
Join Date: Jul 2000
Location: So. Calif.
Posts: 19,910
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Suggest replacing your more desireable ROW pistons for a set of lower compression US pistons, and/or use the proceeds toward turbo-compatible pistons (factory or aftermarket). Perform other turbo-performance mods (ARP rod bolts, turbo distributor/dig. ign. box, etc.), then proceed. You can then boost the engine to your build).
Inform yourself with all the ramifications of turbocharging. Resist overdoing it as it gets expensive. Maximum Boost - Turbocharger Systems *-* Bentley Publishers - Repair Manuals and Automotive Books Sherwood |
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