Jump to content
The mkiv Supra Owners Club

2JZ-GTE block or engine


Paul Whiffin

Recommended Posts

The castings are slightly different, the NA blocks are slightly lighter (must have less material) - though it is true that some of the drag racers in the US prefer to use the NA blocks without the squirters. I believe it increases oil pressure?

 

If an NA block is any good to you Paul I've got a good one here that I can drop off when I collect the other bits? Let me know because I'll be weighing it in at the weekend.

Link to comment
Share on other sites

No, the casting is un-drilled and un-machined in the areas of the squirters.

 

Hmm sure ive seen a block that had little blanking plugs installed, wonder what that was for???. Do any of the aftermarket pistons use the oil squirters???

Link to comment
Share on other sites

Hmm sure ive seen a block that had little blanking plugs installed, wonder what that was for???. Do any of the aftermarket pistons use the oil squirters???

 

 

I so far as any piston will gain additional crown cooling from having the underside jetted with cooler oil, yes. In so far as do any forged pistons use a cooling gallery within the crown, like the stock cast pistons, no. The only forged cooling gallery pistons I've seen are the Tomei ones. I have those in my RB26 engine. Never seen any for the *JZ--GTE engines though.

Link to comment
Share on other sites

I wrote to Tomei yesterday to see if they had any with the cooling channel in the crown. Here's the response.

 

"Hi Mark,

 

Only our RB26 has the option of selecting the cooling channel pistons design

(we have 2 types available for the RB26DETT).

The 2JZ is without the cooling channel.

 

Thank you

 

--

 

Sincerely

 

Allen Lorenzo

 

TOMEI POWERED USA Inc.

13 Orchard Suite 107

Lake Forest CA 92630 USA

Tel: +1 949-855-6577

Fax: +1 949-855-6525

http://www.tomeiusa.com

[email protected]"

 

So there you have it from Tomei........ :(

Link to comment
Share on other sites

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. You might also be interested in our Guidelines, Privacy Policy and Terms of Use.