GA16DE turbo This is where things go boom - Page 3

**wes** · Apr 29th, 2009, 08:35 PM

Quote:

Originally Posted by turbo200sx007

mine should be back together this weekend

, got the hp kit for it wiseco pistons and copper head gasket,i got the stock crank the rods/bolts and the wiseco pistons cyrogenic treated. using gt28rs msd 50lb injectors with cobra maf, jwt tuned ecu , jgy fuel rail, areospeed fpr. lookin for 330 340ish

. will post pics later for u all

That will require big boost! 20 + PSI!!!!! What compression.

stjac566 · Apr 30th, 2009, 02:07 AM

yeah...most of the guys getting 330 or so ran about 25 lbs on a 28rs. I dont know how well that cryogenic treating is gonna work for you, but make sure to keep that detonation under control cause as ive said before i dont trust those rods at that high power. way to go with the copper head gasket thats the way i went as well. imay i suggest you use some sealant on it though otherwise it may "weap" water onto your pistons when its cold and not running. Use "CAT cement" it withstands 5000 psi and will hold under extreme temps. a lot of guys running copper head gaskets use that to prevent the problem. you usually have to get it from a caterpillar parts department. This is the advice i was given and it has worked out well so far. I am also curious as to the compression ratio. i only dropped mine to a 9.3 but with a thick head gasket so it may be more like 9.2 or 9.1. Let us know we is curiosity.

**wes** · May 1st, 2009, 03:26 PM

I am typically not a fan of copper headgaskets on street cars as they can be tricky to install properly (annealing, sealant,etc...). Not that they cannot be made to work, but I have yet to have someone show the oem gasket is a weak link...

stjac566 · May 2nd, 2009, 12:47 AM

Quote:

Originally Posted by wes

I am typically not a fan of copper headgaskets on street cars as they can be tricky to install properly (annealing, sealant,etc...). Not that they cannot be made to work, but I have yet to have someone show the oem gasket is a weak link...

I have blown four OEM gaskets. once after a year on 15 lbs on a T25/28 setup, twice at 15lbs on a gt30r and once at 20 lbs on a gt30r with a perfectly flat block and head. unless you can keep the temps well below normal operating temperature, that thing just gets holes blown right through it into the water vanes. I am not so much a fan of copper head gaskets on street cars either, but in our case this is our only option. Cometic wants a minimum of 50 gaskets before it will design and produce one, i have had friends higher in the industry and myself contact them more than once. Ajusa no longer makes one, and wont start reproducing the MLS, ive tried, and Felpro basically said F you to me when i asked them about making an MLS even though they already make a standard OEM replacement and have all of the blueprints to design one. Typically the graphite head gaskets on all Nissans are the weak link, most notably on the KA24 who has the same problems i, and im sure many others have encountered. Yes, the copper head gaskets are difficult to get under control initially, but until someone decides we are actually worth the performance industry we cant really do too much else. Plus, the copper gaskets are good to some crazy like 2000hp under like 250 degrees or so. Nothing beats that, lol

**wes** · May 2nd, 2009, 08:52 PM

I understand about the lack of options. I did the same thing with cometic etc. When I blew the stock gasket and didn't want to use an oem replacement. Then I found out they redesigned the OEM part and have not had an issue with it in 5 years of road course use on a GT28RS at 13-18 psi...

Do you know of you ever had the newer version gasket? It does not look like the typical graphite gasket...

turbo200sx007 · May 2nd, 2009, 11:09 PM

Quote:

Originally Posted by wes

That will require big boost! 20 + PSI!!!!! What compression.

8:5:1 .................

stjac566 · May 3rd, 2009, 02:31 AM

Quote:

Originally Posted by turbo200sx007

8:5:1 .................

wow that is some crazy low compression...well not for a typical turbo car, but to get that thing going from a stop light will require like 3/4 throttle for regular driving. you can run as much boost as you want on that turbo and im pretty sure you will be ok. that will be one sick drag car sir. let me know how it drives regularly i was too panzy to go that low with my compression cause i didnt want to have to deal with the day to day driving.

stjac566 · May 3rd, 2009, 03:11 AM

Quote:

Originally Posted by wes

I understand about the lack of options. I did the same thing with cometic etc. When I blew the stock gasket and didn't want to use an oem replacement. Then I found out they redesigned the OEM part and have not had an issue with it in 5 years of road course use on a GT28RS at 13-18 psi...

Do you know of you ever had the newer version gasket? It does not look like the typical graphite gasket...

so what is this gasket made out of, and how is it different, I dont know if Felpro stepped up to match the redesigned OEM part or not, but i have been using theres for years and have had the same luck with theres as the OEM.

stjac566 · May 3rd, 2009, 03:13 AM

another thing that breaks.....piston rings on installation....i thought buying a ring expander would help me out this time around...nope sticking to the fingers....far safer...FML. delaying build.

stjac566 · May 16th, 2009, 04:10 AM

car is back running again. this time with Wiseco pistons at 9.3 to 1 compression, copper head gasket, toga hp bearings, blox boost controller, and clutchmasters fx 500 (stage 5) clutch. apparently after 3 months of use one of my Venom 440cc injectors broke, so i ordered deatschwerks 740ccs which are on the way. currently driving around town at 12lbs on the 30r with 240sx 260cc injectors until the new ones come in. surprisingly those injectors will keep the AFR below 12.0 at that boost on that size turbo. whooped a Chrys. 300c today with three other people in my car. thought that was pretty cool.

**2dr_Sentra** · May 16th, 2009, 05:53 PM

Post some pics

stjac566 · May 17th, 2009, 12:30 AM

i already posted some pics...see farther up thread...it looks no different on the outside, save the tiny boost controller. if i can i will post some higher quality ones when i get the chance to borrow a digital camera.

turbo200sx007 · May 24th, 2009, 09:04 PM

have any of u guys brokin any axels yet, i sure havent the stockers are strong, ha i am still cryo treating it, i gettin my tranny, clutch, pressure plate, head bolts all treated, they will be done next week then i am good to go, 300whp daily drivin will be nice

the only problem i have ever had as was stock headgasket which blew at 15 pounds also 3 times hahah, but no more worries about that now .i will post pictures as soon as i get it all back together fresh engine bay and engine paint too hahah i cant wait

**wes** · May 25th, 2009, 02:27 PM

Quote:

Originally Posted by turbo200sx007

have any of u guys brokin any axels yet, i sure havent the stockers are strong, ha i am still cryo treating it, i gettin my tranny, clutch, pressure plate, head bolts all treated, they will be done next week then i am good to go, 300whp daily drivin will be nice

the only problem i have ever had as was stock headgasket which blew at 15 pounds also 3 times hahah, but no more worries about that now .i will post pictures as soon as i get it all back together fresh engine bay and engine paint too hahah i cant wait

Why are you getting the head bolts cryo treated? They are torque to yield bolts, what benefit could that provide?

I blew a stock headgasket when I maxed out the 240SX MAF. Years ago I installed the revised version of the OEM gasket and have had zero issues even at 18 PSI with stock bolts.

As far as axles, never had an issue. Even with slicks and 1.8 60' times....

turbo200sx007 · May 27th, 2009, 04:47 PM

Quote:

Originally Posted by wes

Why are you getting the head bolts cryo treated? They are torque to yield bolts, what benefit could that provide?

I blew a stock headgasket when I maxed out the 240SX MAF. Years ago I installed the revised version of the OEM gasket and have had zero issues even at 18 PSI with stock bolts.

As far as axles, never had an issue. Even with slicks and 1.8 60' times....

well its being done for free, so u couldnt be bad ??