supercharged methanol injected beast help!!

[The yob]

Hi There

Im after abit of advise, Im just in the process of building a Blown injected small block chevy, Im after some advise on what compression pistons to use? I hear many different things, I was thinking about 8.5-1 ? Having never ran a methanol blown motor im new and on a steep learning curve! Im using a standard stroke with standard size rods (5.7) the blocks +30 with standard deck height, Any advise would be highly appreciated, also any advise on running a blown methanol injected beast would also be very welcome.

Many thanks

Mat

[The yob]

Hi There

Thanks for the info! The engine is just about to be stripped, Ive got some nice sexy aluminum rods, Just trying to work out what pistons, I was just about to order some JE Blower pistons(Part number 131636) Any idea what pistons to go for!...very confused now!:/

[BennettRacing]

We have ran as high a 13:1 in past but I would aim for low 11's the higher the comp, more critical the tune up.

O-ring the block now and save your self LOADS of grief, like Jon says copper HG.

Definetly run a stud girdle

Biggest part of maintenance is going to be your valvetrain depending on how hard you plan you revving the motor?

[BennettRacing]

JE make a very nice piston, very light.

Depending on your heads you want something like these

http://store.summitracing.com/partdetail.asp?part=...

[The yob]

Thanks for the info! Well im strugling to find JE off the shelf pistons to the spec of my engine, Any Ideas? Please see below my engine spec

Bore 355 - (4030)
Stroke - 3.48"
Rod size - 5.7"
Standard Deck 9.000
Heads - GM - 23 degree - Intake port volume 169cc
exhaust port volume 65.5cc
valve size-int - 2.02"
Valve size ex - 1.60"

If anyone could point me in the direction of the pistons to buy it would be great, Thanks for the quick response ..very impressed!

Thanks for your time

Mat

[BennettRacing]

Here you go


This is the same piston as link above (JEP-182020-8)

Edited by BennettRacing on Monday 15th October 13:34

[The yob]

Thanks for that, The stroke is not standard, Will that be ok>

cheers

[The yob]

Oooops..oh yes they do fit, !

Many thanks for your help

Mat

[P15TON]

Go for 10 or 11:1 & keep it mild in that respect.

I'd also consider using a custom made blown alcohol piston.

Those off the shelf pistons are not designed to have a load of boost on top of them.

You need 2618 material, full roound skirt, top ring well down the piston & a thick deck (blower piston) design.

Pete