High Compression Pistons

[DyNamiC]

I'm planning on building a motor for another project of mine. It will be a weekend/track car. Looking to stay 2.0 and rev high. I have searched but not found much info on high compression pistons. I don't have E85 in my area so this will be a pump gas/race gas car. Low timing, high boost.

I want to go with something like the Wiseco 1400HD's and aluminum rods. Overall goals are around 750-800 on race gas.

Anyone out there running 10:1 or even 12:1 on 93 pump or race gas? Please post up your experiences with them.

 

[MY1GDSM]

Your not going to get very far on a High boost low timing setup....let alone on pump gas
I think if you do build a High Cr motor your going to end up (atleast to have anyfun with it) be stuck on race gas which would suck IMO

E85 would be your best bet

How far are you from Athens...? They've Got E85
Alternative Fuels and Advanced Vehicles Data Center

O ya I'd pass on Alum. rods...IMHO

 

[brassc2007]

if your gonna run high boost you want lower compression pistons wiseco 8.5:1 or so and some eagle rods

 

[whe3ls]

i think slowboys sells up to 13:1

 

[DyNamiC]

I am running Eagle rods and Wiseco 8.5:1 pistons on my GS-T. I'm not looking to do the same build again. I'm pretty set on aluminum rods as well as this car will not be a daily driver by any means. If I have to run race fuel the majority of the time then so be it. Also, when I say high boost I obviously am not talking about running it as high as a lower CR engine.This will be for an AWD Talon if things go as planned.

To answer MY1GDSM, Athens is about 40 minutes away from me so its not really an option as my only fueling point, .

 

[BoredDSM]

Your not going to get very far on a High boost low timing setup....let alone on pump gas
I think if you do build a High Cr motor your going to end up (atleast to have anyfun with it) be stuck on race gas which would suck IMO

E85 would be your best bet

How far are you from Athens...? They've Got E85
Alternative Fuels and Advanced Vehicles Data Center

O ya I'd pass on Alum. rods...IMHO

Just curious why would you pass up on the aluminum rods?

 

[My1GLaser]

I have an suggestion since E-85 isn't close to you. (well I consider that close since I drive 100miles one way to get it)

I am running a 50/50 blend of E-85 & 93pump. If you do the same then you can get your fuel to last twice as long. Keeping a 50/50 blend is much simpler than when I was running 30/70. 1-5gal can of each and I am good for about 150-200 miles, which is more than enough on my weekend car.

I am running 9:1 CR, 12:1 AFR, 28 psi boost (42lb/min 18g), 23-25* timing with no knock and it was $2.39/gal when I filled up my 55gal worth of gas cans last weekend.

Not a 7-800 whp car by any means, but just my experience.

 

[MY1GDSM]

Athens is about 40 minutes away from me so its not really an option as my only fueling point, .

It's good $hit You could always take 50 gal drum and fill it up every once in a while

Just curious why would you pass up on the aluminum rods?

Because the threads can pull out of the rod

 

[SBR Joe]

To the OP...im running a 10:1 wiseco piston setup in my 2g. im projecting to make a tad over 500whp on straight pump (93 octane here). Eventually i switch to E85 when the weather gets warmer, which will yield much better results.

High CR is the way to go. You might just need to take some extra time tuning to get things perfect. More than 10:1 is not very practical though on a DD pump gas car and decent boost numbers. We made 500whp on pump with our shop EVO with 10.5:1 CR, and an S366, but it was only limited to like 15psi.

 

[DyNamiC]

To the OP...im running a 10:1 wiseco piston setup in my 2g. im projecting to make a tad over 500whp on straight pump (93 octane here). Eventually i switch to E85 when the weather gets warmer, which will yield much better results.

High CR is the way to go. You might just need to take some extra time tuning to get things perfect. More than 10:1 is not very practical though on a DD pump gas car and decent boost numbers. We made 500whp on pump with our shop EVO with 10.5:1 CR, and an S366, but it was only limited to like 15psi.

The car won't be a daily driver by any means. I'm planning on gutting and caging it first off. It will be driven to the track and a bit of street usage on the weekends.

I've been trying to decide myself between 10.5:1 or maybe even higher like 12:1. I would obviously have to pull the timing back a good bit.

I may do as suggested above and fill a drum with E85 to keep at home to fuel it with. Not a bad plan at all.