Almost done with my 2jzgte head swap..few pics
04-08-04, 10:35 PM
#31
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This definitely seems like an overall cheaper way to go than an entire swap. I do have a couple of questions. The differences between the na pistons and tt pistons have been stated a few times. Is there a reason you can't use the tt pistons in the na block? And what about using a 3mm hg?
04-08-04, 11:30 PM
#32
You can definitely use TT pistons. With the TT pistons, stock GTE headgasket, and GTE head, your compression will be ~8.5:1. If you use the TT pistons with a 3mm headgasket, your compression will be VERY LOW. If you don't want to put in TT pistons and use a 3 mm headgasket to lower your compression, your compression should come out to be:
3 mm-.3 mm(stock NA headgasket)= 2.7 mm
2.7 mm - .3 mm(once headgasket is torqued down and crushed)= 2.4 mm
3.14159 X 4.3*2 X .24=13.9411 cc
If the gte head volume is 1 cc less than the ge head then,
13.9411 cc- 1 cc= 12.9411 cc
C/R=499/(55.1 + 12.9411) +1= ~8.33:1 compression
Scott, you want to check up on my numbers?
3 mm-.3 mm(stock NA headgasket)= 2.7 mm
2.7 mm - .3 mm(once headgasket is torqued down and crushed)= 2.4 mm
3.14159 X 4.3*2 X .24=13.9411 cc
If the gte head volume is 1 cc less than the ge head then,
13.9411 cc- 1 cc= 12.9411 cc
C/R=499/(55.1 + 12.9411) +1= ~8.33:1 compression
Scott, you want to check up on my numbers?
Last edited by William N.; 04-08-04 at 11:33 PM.
04-11-04, 03:52 AM
#36
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Originally posted by tt1520
You can definitely use TT pistons. With the TT pistons, stock GTE headgasket, and GTE head, your compression will be ~8.5:1. If you use the TT pistons with a 3mm headgasket, your compression will be VERY LOW. If you don't want to put in TT pistons and use a 3 mm headgasket to lower your compression, your compression should come out to be:
3 mm-.3 mm(stock NA headgasket)= 2.7 mm
2.7 mm - .3 mm(once headgasket is torqued down and crushed)= 2.4 mm
3.14159 X 4.3*2 X .24=13.9411 cc
If the gte head volume is 1 cc less than the ge head then,
13.9411 cc- 1 cc= 12.9411 cc
C/R=499/(55.1 + 12.9411) +1= ~8.33:1 compression
Scott, you want to check up on my numbers?
You can definitely use TT pistons. With the TT pistons, stock GTE headgasket, and GTE head, your compression will be ~8.5:1. If you use the TT pistons with a 3mm headgasket, your compression will be VERY LOW. If you don't want to put in TT pistons and use a 3 mm headgasket to lower your compression, your compression should come out to be:
3 mm-.3 mm(stock NA headgasket)= 2.7 mm
2.7 mm - .3 mm(once headgasket is torqued down and crushed)= 2.4 mm
3.14159 X 4.3*2 X .24=13.9411 cc
If the gte head volume is 1 cc less than the ge head then,
13.9411 cc- 1 cc= 12.9411 cc
C/R=499/(55.1 + 12.9411) +1= ~8.33:1 compression
Scott, you want to check up on my numbers?
04-21-04, 06:43 PM
#38
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Originally posted by motorheaddown
O.k... back to William's thread. Could someone *please* explain to me *why* he has a distributor *and* a separate crank position sensor? His distributor test at the top of the page shows *four* signals: NE (crank), G1 (primary cam), G2 (secondary cam), and ground. Here's a block diagram showing the signals on a 2jz-ge distributor: http://www.mkiv.com/specifications/ncf/ncf93/ncf064.jpg
Zohair?... what's the deal?
Thanks,
-scott
O.k... back to William's thread. Could someone *please* explain to me *why* he has a distributor *and* a separate crank position sensor? His distributor test at the top of the page shows *four* signals: NE (crank), G1 (primary cam), G2 (secondary cam), and ground. Here's a block diagram showing the signals on a 2jz-ge distributor: http://www.mkiv.com/specifications/ncf/ncf93/ncf064.jpg
Zohair?... what's the deal?
Thanks,
-scott
04-30-04, 10:54 AM
#43
Thank you Richie!
Update: I bought a new gte crank timing gear because I wasn't getting any spark. Even though the 97 SC300 has a crank position sensor, the ge timing gear looks different compared to the gte timing gear. At the same time, I also bought a brand new gte crank position sensor as well *just in case*. The parts should be coming in today so I will take a pic to show the differences for you guys to see
The car should be ready by this Sunday because there is a meet I want to go to.
Update: I bought a new gte crank timing gear because I wasn't getting any spark. Even though the 97 SC300 has a crank position sensor, the ge timing gear looks different compared to the gte timing gear. At the same time, I also bought a brand new gte crank position sensor as well *just in case*. The parts should be coming in today so I will take a pic to show the differences for you guys to see
The car should be ready by this Sunday because there is a meet I want to go to.
05-04-04, 12:51 PM
#44
Got the gte crank timing pulley and gte crank position sensor in yesterday. I missed the car meet I wanted to go to on Sunday. I also wanted to take pictures of the timing gear differences but my girlfriend has my digital camera. I will be putting on the gte crank timing pulley and gte crank position sensor today. Hopefully the car starts today as well. I will keep you guys posted..
05-04-04, 03:28 PM
#45
ITS ALIVE!!
After installing the gte timing gear and gte crank position sensor, I started up the car and the car idles sooo smoothly!!! I still need to bleed the brakes and put the hood back on.. Just wanted to let you guys know that it RUNS!!!