Official boss block build

[Dillon Dollar]

Its the jpc/cpe 3 walboro 400 e85 friendly return style.

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[Dillon Dollar]

Officially going twin turbo just placed my ordee through S&H a few days ago on their sweet new tt kit for the 3 valve

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[Greg Hazlett]

Can't wait to see the results!

 

[Bobby]

Me either

 

[Dillon Dollar]

Lol I can't wait either

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[Timmbo]

I'm very interested to hear and see your install and final results!

 

[Dillon Dollar]

Just a quick question if I remember the stock valves are decently strong is this true or should I use some better valves for the build.

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[Bobby]

Iuged stainless intake valves and inconel exhaust valves. I have brant new lash adjusters ant followers along.

 

[Dillon Dollar]

So mainly the intake valves need to be addressed

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[BruceH]

So mainly the intake valves need to be addressed

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Have any stock valves failed?

 

[Dillon Dollar]

None of mine have and they've seen a consistent 650 700 rwhp

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[Doug M]

Officially going twin turbo just placed my ordee through S&H a few days ago on their sweet new tt kit for the 3 valve

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Awesome man! That's great, can't wait to see the results as well.

 

[BruceH]

None of mine have and they've seen a consistent 650 700 rwhp

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I can't think of it ever being a problem. There have been so many high hp 3v builds that I'd think it would be a common knowledge thing.

When are you starting the twins and is there going to be a new thread for it? I really liked the prototype layout of the twin kit that was posted elsewhere and I'm really looking forward to seeing this build.

 

[Dillon Dollar]

Ill have it all in this thread and Bobby ordered my turbos a few days ago as soon as he finishes the layout on his car ill get a prototype kit and help make sure there aren't any bugs to be worked out. I will post very detailed pictures.

Yeah iv never heard of the valves being a problem honestly I may possibly leave the stock ones especial since ill always be using E85 and detonation won't be an issue.

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[GB10]

Just a quick question if I remember the stock valves are decently strong is this true or should I use some better valves for the build.

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Stock valves will be fine unless you turn some serious rpm. The exhaust valves are already a super alloy like inconel. The intake valves would be the ones I would change if you want new ones. I have Manley stainless intake valves and stock exhaust valves in my cnc ported heads. The main benefit from aftermarket valves will be that they are undercut on the head to flow better.

 

[Dillon Dollar]

Well ill probably leave them then I only plan on turning 7000 rpm 7500 max

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[Dillon Dollar]

So my engine builder decided to use gas ported pistons, any information on this would be appreciated because im unsure about what that even is.

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[lethe]

I dont know much about gas ported pistons but they don't seem to be very common on street driven cars.

Edit: This is from ross pistons.

Gas ports allow cylinder pressure to go directly behind the top ring and aid in sealing. Gas ports are very effective when used with tight ring grooves and high ring positioning.

 

[Dillon Dollar]

I called weisco and they said it helps keep the top ring sealed under high combustion pressures in power adder applications

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[lethe]

That's what i read as well. Im not sure if i've seen any builds here where people have used them.