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300hp to 400hp upgrade

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Old 04-07-2017, 11:19 AM
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¯\_(ツ)_/¯
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Old 04-07-2017, 04:03 PM
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Originally Posted by elior77
yes, Pat got 500hp~ with ebay manifold and turbo
If you have read my build thread, I have two turbos to make the big power. That said the Gt3076 I run could for sure make 400whp. I ran it to 30 PSI before with just that turbo, and it would spin street tires on dry concrete to 90mph. But I didn't make 500whp with just that turbo.
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Old 04-23-2017, 01:59 AM
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Got my pistons

The engine will be ready soon, time to order more parts...

83.5mm
8.5:1

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Old 07-07-2017, 05:57 AM
  #84  
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Head got surfaced and a rebuild, block machined to 83.5mm and surfaced, all engine parts got acid cleaned.
The crank is one mil smaller then spec - a decision will be made on sunday and the assembly.

Got the oil cooler adapter, oil pressure sensor and all the rest.

What ring gap should I go for ? it is a street car.
The rings manual says 0.050" I saw people go 0.043"... - aiming at 20-25psi of boost.
At what gap do they come from the manufacture ?







Last edited by elior77; 07-07-2017 at 06:09 AM.
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Old 07-07-2017, 08:13 AM
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Weisco XX rings? Follow the instructions. I know 100% that .0050 is wrong. It's a multiplication factor of the bore size.
I highly recommend having te machine shop gap the rings.
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Old 07-08-2017, 02:14 AM
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I was wrong with the numbers, the factor is 0.0050" the bore is 83.5mm=3.287" so my ring gap should be 0.0050"*3.287"=0.0164" right ?

Thanks
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Old 08-23-2017, 03:23 AM
  #87  
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Getting somewhere

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Old 08-23-2017, 08:00 AM
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Im surprised you bought your pistons after having the block bored. What is your piston to wall gap?
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Old 08-23-2017, 10:37 AM
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your pistons are in backwards.
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Old 08-23-2017, 10:48 AM
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Originally Posted by ryansmoneypit
your pistons are in backwards.
Nope.
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Old 08-23-2017, 11:36 AM
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Originally Posted by ryansmoneypit
your pistons are in backwards.
No they arent lol
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Old 08-23-2017, 01:55 PM
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The picture is from the back
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Old 08-23-2017, 02:20 PM
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It was an engine builder joke. first thing I tell everyone who just finished a build.
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Old 08-23-2017, 02:23 PM
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I actually did install 2 pistons backwards....
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Old 08-23-2017, 02:42 PM
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No they aren't.
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Old 08-24-2017, 09:21 AM
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Yes they are.
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Old 08-24-2017, 10:57 AM
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I like turtles
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Old 08-25-2017, 12:47 PM
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Dropped my heart there with the backward joke...











I'll clean the head as much as I can and I'll shorten the oil filer threads there.

Next thing is getting the ARP2000 replacement for the con rod bolt that I broke with a bad torque wrench.

A double torque routine for head studs is a must ?

Thanks
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Old 08-25-2017, 12:52 PM
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Nice progress.

I use triple routine: 20, 40, 55-60 (depending on whether you're using lube or not)
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Old 08-25-2017, 12:55 PM
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I mean do the 25-45-65 twice... tight loose and tight again...
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