Does anyone know where to get some Weisco Pistons? I need some low compression one forged preferebly. I heard ther a bit more affordable than the Arias 87mm. The block i will have has been verified by JWT as 8:4:1 cr with the arias pistons. I heard
Ryan N. deals with them Ryan? Anyone? ideas on some fair pricing?
Thanks Lawrence
92 se-r turbo
90 Talon TSI
(Currently being made "fast")

Yeah, I have them in my motor. I am a dealer for them as well. Send me an email for some pricing. I am using the stock bore 86mm pistons by Wiseco now but they do offer an 87mm piston as well. Both make the compression ratio 9:1, which I have run as much as 24 psi of boost on with stock rods and stock head gasket.

I'll have a price on those monday...what size bore, and ratio do you need?
Travis

I need 87mm 8:3:1 CR.


Thanks Lawrence

Originally posted by Low612
I need 87mm 8:3:1 CR.


Thanks Lawrence

The Wiseco pistons only come in 9.0:1 CR, unless you get them custom made. You can go to thier website, call them, and give them the specs yourself if you want that low of a CR. The JWT/Arias pistons yield 8.5:1 CR. I know JE makes pistons for the GTiR Guys in Europe with 7.8:1 CR. I believe S&E Motorsports carries them in stock i the UK. The GTiR has 8.3:1 CR only because o the quench area of the head. They use the exact same pistons as the GTiR.

So if i go to 8:5:1 cr what kind of effect would that have on my fuel mapping on my current ecu , since its programmed for 8:3:1?


Thanks Lawrence

Originally posted by Low612
So if i go to 8:5:1 cr what kind of effect would that have on my fuel mapping on my current ecu , since its programmed for 8:3:1?


Thanks Lawrence

I doubt there is even a difference in mapping between the two.

Originally posted by Low612
So if i go to 8:5:1 cr what kind of effect would that have on my fuel mapping on my current ecu , since its programmed for 8:3:1?


Thanks Lawrence

Do you have a GTiR motor? I thought you had GTiR pistons in a DE motor, correct? The GTiR and Bluebird use the exact same pistons. So if you are assuming the CR to be 8.3:1 like the GTiR, you are wrong. You have 8.5:1 CR.

I know when I swapped out my 9.5:1 CR US Spec SR20DE for a Primera 10.0:1 CR SR20DE, I was concerned with the fuel/timing curve on Nitrous. Clark said that the fuel/timing curves wouldn't be off so I never had it sent in to be reprogrammed for the JWT 100 shot program and higher CR. If anything, you would send your ECU in to get a more aggressive timing curve since you would have forged pistons.

9.0:1 CR is *GREAT* for the street. I am seriously considering these pistons when I build my spare motor in the next couple of months. The Wiseco pistons have held up exceptionally well in Ryan's car. It is very responsive on the street.

If you wanted 8.5:1 CR Wiseco pistons, you would have to spec teh pistons out yourself. I am not too sure if you have ever spec'd out pistons before, but if you don't know exact numbers and tolerances, I wouldn't even try it.

Try the 9.0:1 CR Wiseco pistons, I know you won't be disappointed!

Ok interesting enough. So the gti-r and blubird both have 8:5:1cr?
I always thought it was 8:3:1 for the git-r and 8:5:1 for the BB. I did put in new pistons over a year ago they were 8:3:1cr from pulsar gti-r. Unless the USDE head and block design automatically make the cr 8:5:1 when gti-r pistons are placed in it (8:3:1) like i did. On another note using the 9:0:1 pistons from weisco does sound nice . Would i be running slightly richer with my current ecu program ? I know its only 100 bucks to reprogram but its such a task sometimes making sure i get my stuff bck on time which is usually a week after they say it will be . you all know :>P


Lawrence

Originally posted by Low612
Ok interesting enough. So the gti-r and blubird both have 8:5:1cr?
I always thought it was 8:3:1 for the git-r and 8:5:1 for the BB. I did put in new pistons over a year ago they were 8:3:1cr from pulsar gti-r. Unless the USDE head and block design automatically make the cr 8:5:1 when gti-r pistons are placed in it (8:3:1) like i did. On another note using the 9:0:1 pistons from weisco does sound nice . Would i be running slightly richer with my current ecu program ? I know its only 100 bucks to reprogram but its such a task sometimes making sure i get my stuff bck on time which is usually a week after they say it will be . you all know :>P


Lawrence


They use the same pistons. The head design is what gives the GTiR lower compression. The DE and BB DET have the same head design, thus both of them having 8.5:1 CR. You may want to send your ECU in anyways. JWT has a program for forged pistons! They have a more aggressive timing curve than you would have with a stock block! At that time you can tell them you have 9.0:1 CR rather than 8.5:1 , but I don't think it will be much different!

Well since im in there you think i should spend BANK and get forged rods or stick with the stock de ones. I doubt i will be pushing 400+ with a t3/t4 .63 . What are your thoughts guys?
So what do the 9:0:1 weisco's run?


Thanks Lawrence

Originally posted by Low612
Well since im in there you think i should spend BANK and get forged rods or stick with the stock de ones. I doubt i will be pushing 400+ with a t3/t4 .63 . What are your thoughts guys?
So what do the 9:0:1 weisco's run?


Thanks Lawrence

Group 5/AEBS layed down 450 whp with the stock rods! They should be fine! I have never seen a rod give out on high hp SR20's, it has always been the ring lands. Ryan is running stock DE rods without any problems!

Ryan-
Get him a price on the pistons!

I know of a guy who sprayed a 140 shot of NOS on the stock bottom end and bent two rods. Mind you that NOS is more volatile and comes on instantaneoulsy increasing torque considerably. HP doesn't kill the rods, but instant torque does them in. Turbos come on more linearly. I don't know the limit of the stock rods. Does anyone know?

Originally posted by Big Boost
I know of a guy who sprayed a 140 shot of NOS on the stock bottom end and bent two rods. Mind you that NOS is more volatile and comes on instantaneoulsy increasing torque considerably. HP doesn't kill the rods, but instant torque does them in. Turbos come on more linearly. I don't know the limit of the stock rods. Does anyone know?


The most I have ever seen on stock rods is 450 whp produced by Group 5/AEBS a couple of years ago! Jay H layed down 409 whp and Ryan Besterwich layed down 392 whp. Ryan Nielson has layed down 363 whp and there are numerous people who have layed 325+ on the stock rods!

I hit about 322hp on the stock rods myself with 16psi of boost. But I was wondering, is it possible to hit upwards of 500 whp on the stock rods or would they begin to fatigue?

Originally posted by Big Boost
I hit about 322hp on the stock rods myself with 16psi of boost. But I was wondering, is it possible to hit upwards of 500 whp on the stock rods or would they begin to fatigue?

I would have a hard time attempting to produce ~500 with the stock rods. I would hate to put pistons in a bottom end only to find out the rods are the weak link and blow a hole in the side of the motor!

I figure if you are attempting to produce 500+ whp, you really should build the motor entirely! Just my opinion!

I already am in the process of trying to build my motor. With the turbo set up and amount of boost I'll be using, I'd be a fool not to. I originally was going to find out myself, but when I found out that the one guys rod bent, I wised up or is that I wiseco'd up............

Originally posted by Big Boost
I already am in the process of trying to build my motor. With the turbo set up and amount of boost I'll be using, I'd be a fool not to. I originally was going to find out myself, but when I found out that the one guys rod bent, I wised up or is that I wiseco'd up............

When are you planning on having the car running? Eagle Rods are going to produce rods for teh SR20 early next year! The price will be significantly less than the Crowers. I have used Eagle rods on B18C1 's and they have taken all of the abuse!

Really! That would open up a new world of possibilities for SR20 owners. Do you know an estimate of how much they are going to cost?

Originally posted by Big Boost
Really! That would open up a new world of possibilities for SR20 owners. Do you know an estimate of how much they are going to cost?


I am assuming that the cost in the $400.00-$500.00 per set, which is about $100.00-$200.00 less than Crowers and about $200.00-$250.00 less than Carillo or Cunningham.