Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

Go Back   Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum > General > Tech Talk > S Chassis

S Chassis Technical discussion related to the S Chassis such as the S12, S13, S14, and S15.


Reply
 
Thread Tools Display Modes
Old 05-28-2016, 04:59 PM   #1
1320VR4
Zilvia Member
 
Join Date: Mar 2012
Location: Vernon, NJ
Age: 31
Posts: 269
Trader Rating: (4)
1320VR4 is an unknown quantity at this point
Feedback Score: 4 reviews
300 whp setup, should I replace HG for safety? SR20

I bought an ecu / 740cc injectors / garrett gt2781 turbo and some misc odds and ends from a friend. He's upgrading his setup so I bought his hand-me-downs. He had his car dyno'd at 305 rwhp with this setup and the current tune on the ecu. I'm expecting for my car the tune will be close but I'll still have it professionally gone over once I finish installing stuff.

Anyhow the previous owner ran on the stock head gasket without issue. Was setup as a drift car so it probably had a few thousand miles on it plus beating the snot out of it at the track.

Should I worry about having to replace the HG and do studs or just leave it for now. Plans are in a year or two to build an entire fresh engine so I can go for more power and maintain reliability so I won't be pushing it farther than 300.

I've heard mixed suggestions from folks on if I should or shouldn't worry.
__________________

94 240SX, 93 Stealth, 92 VR4, 93 RX7 , 88 Yota
1320VR4 is offline   Reply With Quote
Sponsored Links
Old 05-28-2016, 07:43 PM   #2
jr_ss
Post Whore!
 
Join Date: Dec 2005
Location: Pa
Posts: 6,052
Trader Rating: (34)
jr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nice
Feedback Score: 34 reviews
Send a message via AIM to jr_ss
Stock headgasket and new OEM head studs/bolts. Should be good for 400 or so.
__________________
My SR20VET
jr_ss is offline   Reply With Quote
Old 06-14-2016, 11:11 PM   #3
Karlhammer
Leaky Injector
 
Join Date: Jan 2015
Location: Minnesota
Age: 33
Posts: 60
Trader Rating: (4)
Karlhammer is making a name for him/her selfKarlhammer is making a name for him/her self
Feedback Score: 4 reviews
Cosworth has the best fire ring clamping I've seen for the money. Won't have any issues one bit. Little bit more than oem but well worth it.
Karlhammer is offline   Reply With Quote
Old 06-15-2016, 06:15 AM   #4
hanzbrady
Zilvia FREAK!
 
hanzbrady's Avatar
 
Join Date: Apr 2015
Location: Floriduh
Posts: 1,168
Trader Rating: (4)
hanzbrady has a spectacular aura abouthanzbrady has a spectacular aura abouthanzbrady has a spectacular aura abouthanzbrady has a spectacular aura abouthanzbrady has a spectacular aura abouthanzbrady has a spectacular aura about
Feedback Score: 4 reviews
Its a quarter of a century old. Replace it.
__________________
[email protected]
hanzbrady is offline   Reply With Quote
Old 06-15-2016, 07:23 PM   #5
Tom N
Zilvia Addict
 
Join Date: Oct 2012
Location: SW Florida
Posts: 746
Trader Rating: (1)
Tom N is an unknown quantity at this point
Feedback Score: 1 reviews
Quote:
Originally Posted by Karlhammer View Post
Cosworth has the best fire ring clamping I've seen for the money. Won't have any issues one bit. Little bit more than oem but well worth it.

I was under the impression that the cosworth head gasket did not have a fire ring like the Apexi does.
__________________
98 240sx w/ S15 SR20DET, T2 20g, 11.22 @ 124.98
Tom N is offline   Reply With Quote
Old 06-15-2016, 08:29 PM   #6
jr_ss
Post Whore!
 
Join Date: Dec 2005
Location: Pa
Posts: 6,052
Trader Rating: (34)
jr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nicejr_ss is just really nice
Feedback Score: 34 reviews
Send a message via AIM to jr_ss
Quote:
Originally Posted by Karlhammer View Post
Cosworth has the best fire ring clamping I've seen for the money. Won't have any issues one bit. Little bit more than oem but well worth it.
Quote:
Originally Posted by Tom N View Post
I was under the impression that the cosworth head gasket did not have a fire ring like the Apexi does.
That's because they don't. However, it is a very good headgasket.
__________________
My SR20VET
jr_ss is offline   Reply With Quote
Old 06-16-2016, 09:22 PM   #7
TheRealSy90
Premium Member
 
TheRealSy90's Avatar
 
Join Date: Mar 2009
Location: Maricopa, AZ
Age: 30
Posts: 7,679
Trader Rating: (10)
TheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant future
Feedback Score: 10 reviews
Keep in mind boost/horsepower does not kill head gaskets nearly as easily as detonation does.


There's plenty of unopened sr20's with the original gasket and studs in the 400hp area reliably.
It's all in the tune really.
__________________
Quote:
Originally Posted by crimsonrockett View Post
Such a good signature.
TheRealSy90 is offline   Reply With Quote
Old 07-21-2016, 08:05 AM   #8
Nissan2nr22
Premium Member
 
Nissan2nr22's Avatar
 
Join Date: Aug 2008
Location: USA
Posts: 1,566
Trader Rating: (30)
Nissan2nr22 has a spectacular aura aboutNissan2nr22 has a spectacular aura aboutNissan2nr22 has a spectacular aura aboutNissan2nr22 has a spectacular aura aboutNissan2nr22 has a spectacular aura aboutNissan2nr22 has a spectacular aura about
Feedback Score: 30 reviews
Quote:
Originally Posted by TheRealSy90 View Post
Keep in mind boost/horsepower does not kill head gaskets nearly as easily as detonation does.


There's plenty of unopened sr20's with the original gasket and studs in the 400hp area reliably.
It's all in the tune really.


accurate af
Nissan2nr22 is offline   Reply With Quote
Old 07-21-2016, 01:30 PM   #9
KAT-PWR
Nissanaholic!
 
KAT-PWR's Avatar
 
Join Date: Dec 2011
Location: US
Posts: 2,040
Trader Rating: (11)
KAT-PWR is just really niceKAT-PWR is just really niceKAT-PWR is just really niceKAT-PWR is just really niceKAT-PWR is just really niceKAT-PWR is just really niceKAT-PWR is just really niceKAT-PWR is just really niceKAT-PWR is just really nice
Feedback Score: 11 reviews
Quote:
Originally Posted by TheRealSy90 View Post
Keep in mind boost/horsepower does not kill head gaskets nearly as easily as detonation does.


There's plenty of unopened sr20's with the original gasket and studs in the 400hp area reliably.
It's all in the tune really.
Quoted for truth.

Its all in your tuners wrist work
__________________
MRP Manufacturing
KAT-PWR is offline   Reply With Quote
Old 07-22-2016, 04:02 PM   #10
cotbu
Post Whore!
 
cotbu's Avatar
 
Join Date: Sep 2005
Location: SWFL
Age: 47
Posts: 3,318
Trader Rating: (3)
cotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nicecotbu is just really nice
Feedback Score: 3 reviews
Quote:
Originally Posted by KAT-PWR View Post
Quoted for truth.

Its all in your tuners wrist work
__________________

LoverTechnologies "Half Broken Things!"
cotbu is offline   Reply With Quote
Old 07-25-2016, 03:35 PM   #11
justinbyrant
Zilvia Member
 
Join Date: May 2011
Location: eugene
Age: 29
Posts: 229
Trader Rating: (0)
justinbyrant is an unknown quantity at this point
Feedback Score: 0 reviews
the last few posts have hit the nail on the head however I would like to add to it, think of it this way, keep the fuse high, when something goes wrong and the tune is bad, or you spike boost or lose boost or any number of things that could happen would you rather replace a head gasket or something more expensive? personally I like to leave my head gasket as a weak point on the engine, detonation causes combustion pressure to spike when it does would you rather blow that pressure through the head gasket or bend a rod? or even less blow out your rings or any of the other number of things that could happen from detonation, no matter what your replacing a head gasket anyways
justinbyrant is offline   Reply With Quote
Old 07-25-2016, 03:37 PM   #12
TheRealSy90
Premium Member
 
TheRealSy90's Avatar
 
Join Date: Mar 2009
Location: Maricopa, AZ
Age: 30
Posts: 7,679
Trader Rating: (10)
TheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant futureTheRealSy90 has a brilliant future
Feedback Score: 10 reviews
Right, would you rather brake/burn a ringland or rod or just blow the gasket out lol.
__________________
Quote:
Originally Posted by crimsonrockett View Post
Such a good signature.
TheRealSy90 is offline   Reply With Quote
Reply

Bookmarks


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -6. The time now is 03:08 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2021, vBulletin Solutions Inc.
vB.Sponsors
Copyright © 1998 - 2019, Zilvia.net™