loosing coolant when spraying?
Thread Starter
9 Second Club
iTrader: (11)
Joined: May 2005
Posts: 4,507
Likes: 5
From: in your closet
loosing coolant when spraying? anyone else had this issue? its not going in the oil and its not smoking. i loose enough for the low coolant light to pop on. only does it if i spray it. driving around n/a no issues. temps are all good also. engine temps around 200 and coolant temps around 180.
i am having the same problem. it pushes some out of the overflow cap. i think the heads are lifting a little on n2o. cometic told me to have the heads re-torqued. havent had time to get it done yet. let me know what you find out.
It is probably the heads lifting under extreme cylinder pressure. I had a similar issue when I had an LS6 block, studs, cometics, and a 325 rwhp shot. Would push water on the second stage of spray.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
Add me to the list. When I jetted up to a 150 shot the heads lifted. I've got stock non-MLS gaskets(ordered the MLS ones 
) and ARP head bolts. I'm going to put on some stock MLS gaskets and head studs and try again. I don't see how it could be detonating considering it was rich, running 22-23* timing, and the plugs look great.
) and ARP head bolts. I'm going to put on some stock MLS gaskets and head studs and try again. I don't see how it could be detonating considering it was rich, running 22-23* timing, and the plugs look great. 
I never had a water pushing problem on my stock ls6 upto 285rwhp shot. On the new 408 I went with the ARP L19 head studs which allow for a greater clamping force, about 40% more than standard ARPs. They are pricey, but I plan on a larger than 300 shot and am trying to minimize potential problems. Stock GM MLS gaskets even on the 408.
Robert
Robert
Thread Starter
9 Second Club
iTrader: (11)
Joined: May 2005
Posts: 4,507
Likes: 5
From: in your closet
its a 150 shot. i just checked the pressure on my cap and its not holding and my overflow is full so im going to swap that first then if not ill have to re torque the heads. seems a lot of people are having this issue with the cometic head gasket/ arp head bolt combo. im hoping i dont have to retorque the heads its a pain in the ***.
Gator thinks it the headgasket. He said you pushed the gasket and to pull the head. Hopefully your not in bad shape. Goodluck bro and hopefully I will see you on the track on the 16th.
EDIT - NVM, gator already responded......
EDIT - NVM, gator already responded......
I've seen a "bad" radiator cap cause this before. Make sure you have the proper radiator cap and it's working at it's rated pressure.
Please check this BEFORE assuming you are pushing water and start swapping headgaskets and what not.
Please check this BEFORE assuming you are pushing water and start swapping headgaskets and what not.
Is your over flow full? is the cap wet? Nitrous causes a big change in coolant temp . the gas pressurizes fast from the heat exchange. one key thing is to have your starting temp of the run as low as possible. some guys pull to the line at 180* and by the end of the run itl be 200 and push coolant out. I have told a few guys get to the line 150 and at the end of the run your 180 and they have not pushed a drop. When we are racing we have the fans on full blast as soon as we start the car. Try this and see if it helps.