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| ford-racer46 |
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Hello, im gonna rebuild an AU motor, problem is when turboing or Supercharging ive been told to lower compression for Bigger boost, so my question becomes when rebuilding the engine what kit is best, or can i get a high compression kit and lower with an ECU or somthing, i dont no how these things work!
_________________ Now, I've got a message for all the other drivers out there. If you smell a delicious, crispy smell after the race, it's not your tailpipe. It's just a little of Shake...and Bake! |
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| paulos |
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compression cant be lowerd by the ecu
more boost you want lower compression youl need( safer on engine to) normaly people get a decompression gasket
_________________ God made s**t, Holden put wheels on it |
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| BEAR80 |
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Age: 44 Posts: 683 Joined: 4th Mar 2010 Ride: BF Fairmont Ghia & TS Magna Location: central coast |
hey
strip the engine first and get the block and crank and cam checked out and get them cleaned up accordingly, they may need to get machined then order parts to suit yes high boost loves low compression cheers bear |
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| frd906n |
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search is your friend
_________________ Daily Driver, Series 1 Au Forte Quote: Posted by Xcabbi, Does it slap or rattle? Rattle is more to do with timing chains and tensioners. Slap is more to do with lifters, rings, bearings or GENIII boat anchors
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| ford-racer46 |
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Why do i need low compression? does boost increase it? can head work be done for flow without increasing? i mean whats the best way....ive been convinced Turbo has more potential so thats the route!
_________________ Now, I've got a message for all the other drivers out there. If you smell a delicious, crispy smell after the race, it's not your tailpipe. It's just a little of Shake...and Bake! |
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| Dansedgli |
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Do a search.
Its all been covered before. |
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| BEAR80 |
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Age: 44 Posts: 683 Joined: 4th Mar 2010 Ride: BF Fairmont Ghia & TS Magna Location: central coast |
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| paulos |
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BEAR80 wrote: im sorry but that was funny s**t
_________________ God made s**t, Holden put wheels on it |
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| ford-racer46 |
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BEAR80 wrote:  Thats very clever lol
_________________ Now, I've got a message for all the other drivers out there. If you smell a delicious, crispy smell after the race, it's not your tailpipe. It's just a little of Shake...and Bake! |
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| ford-racer46 |
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Ive had a look ive read hi compression+ boost is not always bad, a car can have hi compression and low boost and make similer power as low compression and hi boost!
Its confusing
_________________ Now, I've got a message for all the other drivers out there. If you smell a delicious, crispy smell after the race, it's not your tailpipe. It's just a little of Shake...and Bake! |
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| Crazy6ltr |
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u should be able to tune it and all that but wat im goin to do is:
Grab a VCT motor strip it down and but new pistons, rods, bearings, valve, ect. Then ill clean it, paint the sump, block blue, make the head siver, and have a metallic red VCT roker cover, then run a supercharger setup like Troyman's ED, but i could go with a turbo, but with is better
_________________ Car got Crushed |
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| ford-racer46 |
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Crazy6ltr wrote: u should be able to tune it and all that but wat im goin to do is: Grab a VCT motor strip it down and but new pistons, rods, bearings, valve, ect. Then ill clean it, paint the sump, block blue, make the head siver, and have a metallic red VCT roker cover, then run a supercharger setup like Troyman's ED, but i could go with a turbo, but with is better Paulos is pretty clever man PM him
_________________ Now, I've got a message for all the other drivers out there. If you smell a delicious, crispy smell after the race, it's not your tailpipe. It's just a little of Shake...and Bake! |
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| TROYMAN |
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i dont think its neccesary to build an engine with lower compression unless you want to push huge amounts of boost into it..
a std 4.0l can take up to 10-12psi boost providing the tune is right... |
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| Crazy6ltr |
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U serious, meh wadda ya know lol, but would it still be better if ya strip it down and clean it?
_________________ Car got Crushed |
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| ford-racer46 |
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TROYMAN wrote: i dont think its neccesary to build an engine with lower compression unless you want to push huge amounts of boost into it.. a std 4.0l can take up to 10-12psi boost providing the tune is right... Thanks Troyman for straight shooten! i might rebuild and lower it slightly for higher boost, in you experiance do you think that will be a street winner!
_________________ Now, I've got a message for all the other drivers out there. If you smell a delicious, crispy smell after the race, it's not your tailpipe. It's just a little of Shake...and Bake! |
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