GeordieSteve Posted December 1, 2005 Share Posted December 1, 2005 Anyone heard of these before? http://cgi.ebay.co.uk/Toyota-Supra-2JZGTE-3-0-Ltr-Wiseco-forged-pistons_W0QQitemZ8017748622QQcategoryZ72205QQssPageNameZWDVWQQrdZ1QQcmdZViewItem I was getting some serious det before I stripped the engine and I'm worried the pistons may be pitted. While I've got most of the engine out I'd like to make it a little stronger if I can. So what's peoples thoughts on these Link to comment Share on other sites More sharing options...
Alex Posted December 1, 2005 Share Posted December 1, 2005 They'd do the job - but they are .2 -> .4 (they make 2 specs can't see eBay at work so can't tell which are advertised) overbored so will require block work. They come as stock 8.5:1. Link to comment Share on other sites More sharing options...
JohnA Posted December 1, 2005 Share Posted December 1, 2005 The americans use them. CR is 8.5:1 usually and at £600 for the set they don't look bad value to me. If your bores are fecked, then they are a good alternative to a new block/std pistons. Don't know about the 'stronger' bit, I doubt that. I've had Wiseco pistons perforate under harsh conditions on turbo bikes. Link to comment Share on other sites More sharing options...
GeordieSteve Posted December 1, 2005 Author Share Posted December 1, 2005 Thanks fellas. What else would you go for to withstand higher boost? I just want to make it that bit safer before I put her back on the road Link to comment Share on other sites More sharing options...
JohnA Posted December 1, 2005 Share Posted December 1, 2005 Race fuel is the best thing. Next best is a water/methanol setup, like the one I described on SupraForums. I've run very silly boost pressures in the past with no detonation whatsoever. Link to comment Share on other sites More sharing options...
Gaz Walker Posted December 1, 2005 Share Posted December 1, 2005 Wiseco aren't brilliant in all honesty Steve. JE, or CP (best) pistons are better. http://www.cppistons.com/PDFs/Sport%20Compact/SportCompactpdf.pdf Link to comment Share on other sites More sharing options...
GeordieSteve Posted December 1, 2005 Author Share Posted December 1, 2005 Any prices then Gaz? Just looking into it at the minute. All depends on what route I decide to take Link to comment Share on other sites More sharing options...
Chris Wilson Posted December 1, 2005 Share Posted December 1, 2005 JUN are the best (Cosworth pistons sold under licence). I think Omega may be about to do some too, but you may have to buy via whoever commissioned the order. Link to comment Share on other sites More sharing options...
Gaz Walker Posted December 1, 2005 Share Posted December 1, 2005 JUN are the best (Cosworth pistons sold under licence). True, but they are twice the price! Plus I beleive if you order enough sets you can buy them direct from Cosworth now (10+). Tomei also very very good. Regards, Gaz. Link to comment Share on other sites More sharing options...
tDR Posted December 1, 2005 Share Posted December 1, 2005 JE forgies seem to be good value from a cost / endurance perspective. Decent rod bolts seem to be the biggest concern on making the 2JZ bottom end stronger... Link to comment Share on other sites More sharing options...
Alex Posted December 1, 2005 Share Posted December 1, 2005 CP pistons are the lightest. Eagle Rods are the lightest. Carillo Rods are the strongest. The problem is the JUN pistons are an unknown quantity, no matter who makes them. They are also supposed to be over 100g heavier than the CP's! Link to comment Share on other sites More sharing options...
Dave S Posted December 1, 2005 Share Posted December 1, 2005 can you elaborate on the 'Wiseco's arent brilliant' statement please cheers Dave Link to comment Share on other sites More sharing options...
b_have Posted December 1, 2005 Share Posted December 1, 2005 I use Wisecos in all the Kawasaki race Engines I build. Quality is superb, They also produce an 'E-coat' piston with an anti-det surface on the crown. Although have found that if the motor is detting it might only buy you a few extra minutes of piston life! (important on a race engine) Link to comment Share on other sites More sharing options...
tonyhawk Posted December 1, 2005 Share Posted December 1, 2005 Wiseco are huge in the bike world and make a lot of kits for a lot of bikes; I can't attest to their car pistons, but I have run Wiseco in several bikes and they take huge punishment. Bear in mind that bikes run higher compression ratios (than turbo engines) and rev a lot higher, although to be fair, they are not subjrect to the same loadings as a car places on engines. As for rods, I'm not convinced that they need replacing. I have a few mechanic mates who race cars, and they all say that they have never had a standard rod snap or give under pressure (across various cars). They have had the rod bolts go (I would reccommend APP), and other factors, such as oil starvation cause big and little end problems, but on the whole the rods bear up very well and the Supras rods aren't exactly small. Granted I have never done stress testing on stock rods and my 'evidence' is annicdotal, but I would be curious to hear if someone on here has had a rod break on them that was not caused by some external factor? Link to comment Share on other sites More sharing options...
TLicense Posted December 1, 2005 Share Posted December 1, 2005 True, but they are twice the price! Plus I beleive if you order enough sets you can buy them direct from Cosworth now (10+). Tomei also very very good. Regards, Gaz. Ahh if only we knew of someone who had a direct link to people at Cosworth Link to comment Share on other sites More sharing options...
Dave S Posted December 1, 2005 Share Posted December 1, 2005 Steve...I think a set of Wiseco pistons are around $600 in US Link to comment Share on other sites More sharing options...
Guest Terry S Posted December 1, 2005 Share Posted December 1, 2005 If anyone is interested Migster has new Boxed 86.5mm CP pistons with uprated wrist pins he is selling, so no waiting Link to comment Share on other sites More sharing options...
Miguel Posted December 1, 2005 Share Posted December 1, 2005 If anyone is interested Migster has new Boxed 86.5mm CP pistons with uprated wrist pins he is selling, so no waiting yuppers I do but without wristpins though:yes: Link to comment Share on other sites More sharing options...
Jake Posted December 1, 2005 Share Posted December 1, 2005 Would the stock gudgeon pins be ok with those CP pistons and stock rods? (When did they start being called wrist pins?) Link to comment Share on other sites More sharing options...
Miguel Posted December 1, 2005 Share Posted December 1, 2005 Would the stock gudgeon pins be ok with those CP pistons and stock rods? (When did they start being called wrist pins?) Yup and Yup. Called wrist pins ever since my college days ...even though gudgeon pins is another name for them. Link to comment Share on other sites More sharing options...
Ian C Posted December 1, 2005 Share Posted December 1, 2005 Ahh if only we knew of someone who had a direct link to people at Cosworth Can you sneak me a set out the back door then? -Ian Link to comment Share on other sites More sharing options...
TLicense Posted December 1, 2005 Share Posted December 1, 2005 As good a deal I may be able to get, I think knicking them may be a little frowned upon. Especially in my current employment status! Link to comment Share on other sites More sharing options...
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