1.5jz prospects, 2jz GE questions

[2jz conquest]

Hello, I am in the process of building a 2jz powerplant for a project of mine. I have a 2jz GE out of a lexus SC300 that I got for free. The head gasket is blown and it has bent valves. I will most definately need to replace the head, so I was wondering if a 1jzGTE head will bolt up to a GE block? I know that a 2jzGTE head will not bolt to a GE bottom end, is this the same case with the 1jz head? Also, my pistons are a bit scored but not in horrible condition. I am also aware that the 2jzGE pistons don't respond to boost very well. What modifications are required to put GTE pistons in a GE block?

I would like to salvage as most of this 2jzGE as possible. I may just end up buying a 1jzGTE complete long block, but If I can use a 3.0 bottom end then I will.

Thanks for help in advance, sorry if I come off as a newb

[pwpanas]

Originally Posted by 2jz conquest

Hello, I am in the process of building a 2jz powerplant for a project of mine. I have a 2jz GE out of a lexus SC300 that I got for free. The head gasket is blown and it has bent valves. I will most definately need to replace the head, so I was wondering if a 1jzGTE head will bolt up to a GE block? I know that a 2jzGTE head will not bolt to a GE bottom end, is this the same case with the 1jz head? Also, my pistons are a bit scored but not in horrible condition. I am also aware that the 2jzGE pistons don't respond to boost very well. What modifications are required to put GTE pistons in a GE block?

I would like to salvage as most of this 2jzGE as possible. I may just end up buying a 1jzGTE complete long block, but If I can use a 3.0 bottom end then I will.

Thanks for help in advance, sorry if I come off as a newb

Actually, a 2jz-gte head bolts to a 2jz-ge bottom end just fine.

Also, no modifications are required to fit 2jz-gte pistons into a 2jz-ge bock. Note however, that the 2jz-gte pistons will not be fully functional without the oil squirters that are present in the 2jz-gte block.

[2jz conquest]

From what I've researched so far, you need to drill out parts of the block for the studs to fit, is that accurate? If this is true, is the same modification required to fit a 1jz head on the GE bottom end?

What part of the GTE pistons won't function in a GE block without squirters? Would I have to worry about overheating the pistons without squirters, or are stock GTE pistons forged?

[pwpanas]

Originally Posted by 2jz conquest

From what I've researched so far, you need to drill out parts of the block for the studs to fit, is that accurate?

No. The threaded holes for the head studs are exactly the same in the 2jz-gte and 2jz-ge blocks.

Originally Posted by 2jz conquest

If this is true, is the same modification required to fit a 1jz head on the GE bottom end?

Sorry, I have no idea about a 1jz head.

Originally Posted by 2jz conquest

What part of the GTE pistons won't function in a GE block without squirters?

As you already alluded to in your next question, it's the cooling.

Originally Posted by 2jz conquest

Would I have to worry about overheating the pistons without squirters

Honestly, it depends how much boost/hp you're planning to run.

Originally Posted by 2jz conquest

or are stock GTE pistons forged?

Toyota hasn't released the metallurgy for the oem pistons...but it's a well-tested/proven fact that, with together with the oil squirters, they will handle 1100+rwhp through a 6spd (using aftermarket connecting rods... Fyi,the oem 2jz-gte connecting rods are 'only' proven reliable to about 850-900rwhp through a 6spd).

Note - I'll be out of town for a few days, so pardon the intermittent responses...