LOL, there goes the #1 piston....

rakkasan

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Mar 31, 2005
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any one else think that 100psi is too low?

I've been messing with my Profec E-01 the last couple of days. The display has been inop so I've been tinkering with it. Today, I got on an on ramp and nailed it and heard a pop and a puff of smoke came out of the back. Luckily I was close to home.

When I got home, the car was running like shit with a loud metallic tap coming from the front of the head. I checked the compression and found the #1 piston only 100 psi. I think that I might have inadvertently raised the boost :biglaugh:

Oh well, my 1.5j swap tempo just jumped up a notch or two :sarcasm:
 

rakkasan

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Ok, I need some concrete info on the cc's of a 2jz-ge piston. take a look at this. I can't find anything other than this. Does anyone know for a fact what the piston cc is?
 

suprahero

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That looks like a good source Mark. Is the 9.13 about what you're wanting in a compression ratio?

I hate to hear that about the 1jz block. So much for being bullet proof..........:sarcasm:
 

rakkasan

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suprahero;1225214 said:
That looks like a good source Mark. Is the 9.13 about what you're wanting in a compression ratio?

I hate to hear that about the 1jz block. So much for being bullet proof..........:sarcasm:

There's no doubt that it was self induced.

As for the head gasket thickness, here's what I have so far (and I think it's right):
bore: 86mm
stroke:86mm
HG Bore: 88mm
chamber cc: 40cc (as per jay)
HG thickness: 2.4mm (compressed, 2.5mm uncompressed)
piston dish cc: 11.72cc (as per toymod)
piston-to-deck: 0.0mm

C/R: 8.532856621475568
displacement: 66.31709469307876


Now some variables:
bore: 86mm
stroke:86mm
HG Bore: 88mm
chamber cc: 40cc (as per jay)
HG thickness: 2.4mm (compressed, 2.5mm uncompressed)
piston dish cc: 9cc
piston-to-deck: 0.0mm

C/R: 8.855031244534934
displacement: 63.59709469307876

bore: 86mm
stroke:86mm
HG Bore: 88mm
chamber cc: 42cc
HG thickness: 2.4mm (compressed, 2.5mm uncompressed)
piston dish cc: 9cc
piston-to-deck: 0.0mm

C/R: 8.61553797791123
displacement: 65.59709469307876

bore: 86mm
stroke:86mm
HG Bore: 88mm
chamber cc: 42cc
HG thickness: 2.4mm (compressed, 2.5mm uncompressed)
piston dish cc: -11.72cc
piston-to-deck: 0.0mm

C/R: 8.312330363580155
displacement: 68.31709469307876
 

suprahero

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Mark, I don't trust myself with a calculator, I surely hate for you to trust me..........:aigo:
 

Reign_Maker

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Aug 31, 2005
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No one trusts you jay... :p

Mark, is it catastrophic? Will you be able to drive it while you build the 1.5 or are you worried about the 1jz head getting damaged before you get the 2jz block?
 

rakkasan

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suprahero;1225264 said:
Mark, I don't trust myself with a calculator, I surely hate for you to trust me..........:aigo:
Jay, I trust few people, but you're one of them. If you don't know something for certain, you (like me) make it known.....

Reign_Maker;1225289 said:
No one trusts you jay... :p

Mark, is it catastrophic? Will you be able to drive it while you build the 1.5 or are you worried about the 1jz head getting damaged before you get the 2jz block?

It's done, I barely made it home. I'm just glad that I started my 1.5 swap already.

I might try to pull the head tomorrow to see what exactly happened. Honestly, I'm more concerned about how to get it to Jays (I love you Jay [and Vonda too :)]) house. It would have been easy with a running motor, but this complicates things.
 

suprahero

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He told me he can't drive it. He barely made it home. We will be doing the build here at my house. I'm taking the block to the machine shop Monday and he's having another 1jz head shipped to my house. I'll be taking it to another machine shop as soon as it arrives. Hopefully, I can get all of this done and back home by friday of next week, but I don't know if they can or not. They'll have to order some bearings, but that shouldn't take too long.



OOOPS, Mark beat me to it.
 

suprahero

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Mark, here's a picture of what I was trying to tell you about earlier. This was posted on Surpaforums and it's gte block.
p1225325_1.jpg
 

rakkasan

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suprahero;1225325 said:
Mark, here's a picture of what I was trying to tell you about earlier. This was posted on Surpaforums and it's gte block.

Awesome, let's do this. I see what you you mean about the valve reliefs.....

EDIT: Are you saying that the block you have is a GTE block?!?!?!
 

suprahero

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I bought it as a ge block, but the pistons look like those. I'll look at it tomorrow and see if it has oil squirters. I'm sure it's a ge block, but you never know.
 

rakkasan

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suprahero;1225337 said:
I bought it as a ge block, but the pistons look like those. I'll look at it tomorrow and see if it has oil squirters. I'm sure it's a ge block, but you never know.

LOL, I would have the perfect MHG already. I have an 88mm x 1.37mm Cometic that would yield a 8.67:1 C/R. If it has GE pistons, I found a 2.5mm. Also, I just ordered the head studs, timing and accessory belts and a 1JZ gasket set. The only thing needed now is fluids and to do the mod to the down pipe.....
 

suprahero

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rakkasan;1225357 said:
OHHHH, maybe an IS300 union bolt and hose for the turbo oil line feed. As anyone successfully tapped an oil feed into a GE block?
I think most just go with the oil filter sandwhich plate Mark.

ForcedTorque;1225358 said:
If I needed somebody to help with a hurry up build, I wouldn't want the help of anyone else. You are in good hands Mark!!

I'm going to be a lot of help for Mark, but Ims giong to get lots of help from Ricky and Mark as well. We should be able to knock this out in a weekend.

I've got a feeling Mark won't want to leave after being fed by Vonda for two days.
 

suprahero

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Sorry Mark, but I stayed inside all day except for my daughters basketball game this morning at seven thirty. I'll look at it in the morning and post an answer first thing.