Where to buy new Pistons 9:1
 

I'm looking for new Pistons with 9:1 for 4x4 engine but nobody have them in Stock here in germany.

Can anybody advice me where i can get some, if they in stock it would be great.

Not sure if you'll find them off the shelf. I would start with Julian Godfrey though. If anyone has them in stock they will as some of the rallycross engines run that compression ratio.

Pec automotive do them .they are shown in their catalogue

Tel. 01376583030
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Think they are wossener

I wrote an Email to Julian Godfrey and wait for his reply ..

Thanks for advice..

You might be waiting a while!

I would ring and speak to Francis.

I struggle with speaking english, i hope it will work with email..

Interesting that you are going for 9.1 compression. What else are you doing with the engine and management?

Its just an rebuild, but it need new pistons

any advantages to using that compression brocker?

I will be able to use 34 & 38 mm restrictor..

whats the max bhp torque you can get from that compression ,and is it hared on the engine brocker?

No idea, i know what i had with 8:1 and 34mm, and it would be fine to have some more..

James usually about 310bhp but upto 500lbft

Old skool rally car set up.

FIA Turbo restrictors
http://rallycars.com/technical-stuff/fia-turbo-restrictors/

thanks buddy , good info :king::king::king:

I will be running that compression ratio without a restrictor. Should be nice to drive off boost as well as on. Will keep boost under 2bar throughout rev range and be running a circa 103ron fuel. I wouldn't like to try it on pump fuel but people have.

Yours will be mental anyway. Personally i would have it mapped on V power to see first. Can you have 2 maps to switch between fuels?

Will probably do a v power plus power pour map. Apparently it works wonders.

Can have multi maps with the MOTEC ecu.

Anyone using methanol to keep temps down?

You mean spraying or as fuel?
It doesn't necessarily bring temps down, it just has a higher octane rating.

Mix it with water and it has a effect but use knock control.

Mark

Yeah just to gain a higher octane.

103 fuel is expensive

Have you looked at power pour? MSD are selling it. If you read the various tests they reckon at the higher mix rate with v power it will give you an octane rating of 103.

Or buy Sunoco MaxNos and do a 70/30 vpower / MaxNos mix.

Max nos mixes particularly well with pump fuel.

Would have to be mapped on this and not driven without the race fuel.

All depends on how many miles you do? I see race fuel as a cheap engine protector but I do bu**er all mileage. Also depends on if you want to use the car for competition as well.

If mapped correctly and to the max each fuel will give never is safer.

Mark

Francis hasn't worked for Julian for nearly 12 months now Andy and Julians wife run the sales side now

Regards Jay

Oh right, haven't spoken to them in a while.

Of course you're right if things are taken right up to the line and backed off a bit all fuels are as safe as each other.
However if you have a conservative power goal with a higher octane fuel there is a bit more, how shall I say, margin???
I could have water meth injection but I figure my car already has four injectors that will be mapped perfectly to the car. Why add another failure point?
That's why I've done away with water to air intercooling.

Sorry for thread hijack op

Out of interest if your had a car mapped on v power say and then You decided to run a higher octane fuel (103 ron, etc), or add something to the v power to make it a higher octane would you gain more power in the cars current state/setup?

Or would it need mapping and boost adjusting to suit the new fuel to get that extra power?

Cheers Paul

You would need to advance the ignition to see any benefit