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Baja 250es 11-01-2020 04:47 PM

Build
 
Question when u run a blower shouldn't u change pistons to like 8 - 1 ratio

Baja 250es 11-01-2020 06:46 PM

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I can't find any good info stating a good blower build

Baja 250es 11-01-2020 06:54 PM

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Other than being bored .030 are these pistons direct replacement for stock pistons and should I do anything special to run these with a wieand 177 blower

zz28zz 11-01-2020 07:04 PM


Originally Posted by Baja 250es (Post 4764100)
What do u mean by get the tune right ?

Generally speaking, it means getting ign timing and fuel mixture adjusted across all RPMs, load conditions and temperatures to achieve max power/best driveability while maintaining a degree of margin to prevent damage or accelerated wear.. Also includes adjustments for quick transitions from one power setting to another (similar to an accelerator pump on a carb), This is where the WB02 comes in handy.

Edit: Missed the part abt op using a carb. Either way, same principle.

Smitty275 11-01-2020 07:14 PM


Originally Posted by Baja 250es (Post 4764137)
Question when u run a blower shouldn't u change pistons to like 8 - 1 ratio

Not really. It's all about building cylinder pressure. Starting with a little high compression ratio just means a little less boost to reach a give HP goal.

Baja 250es 11-01-2020 07:35 PM

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So if I bought a complete blower setup off a guy on here he had it on a stock gen 4 454 365hp and I rehoned, reringed, rebearing, new oil pump and resealed bottom end went through heads completely and bolted his stuff on i should be ok theoretically speaking

Rookie 11-02-2020 08:00 AM


Originally Posted by Baja 250es (Post 4764157)
So if I bought a complete blower setup off a guy on here he had it on a stock gen 4 454 365hp and I rehoned, reringed, rebearing, new oil pump and resealed bottom end went through heads completely and bolted his stuff on i should be ok theoretically speaking

Theoretically yes, but we don't deal in theoretics. It should be close. Tune it properly or don't do it. Also that engine has low-mid 8:1 ratio.
I believe you have the basic platform of the 525sc.

Baja 250es 11-02-2020 08:10 AM

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That's what I was trying to figure out if these pistons were a direct replacement for stock pistons if they were id say that blower setup will work just fine on my engine

Griff 11-02-2020 10:16 PM

Stock compression on a 454mag/365hp is 8.75. You can run 5# of boost with no issues on 93 octane fuel.

Baja 250es 11-03-2020 04:46 AM

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Ok cool thank u , Griff that's what I was looking for sorry to be a pain never built a blower motor rather be safe than sorry also what are the best head gaskets to use and any recommendations on valve springs im redoing the heads today and getting checked at machine shop


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