Coolant burns through exhaust

[sjbsuperman1425]

Leaking between the turbo and the dump pipe. Inside the manifold is wet but engine runs fine and pulls good vacuum. Any ideas?

Im thinkin blown headgasket or turbo...

[Carl H]

sounds like a BHG to me, turbo will leak oil not coolant thru the exhaust.

[sjbsuperman1425]

sounds like a BHG to me, turbo will leak oil not coolant thru the exhaust.

BTW did reuse headbolts is it possible they loosened and leaking coolant pullin head replacing ARP ether way i will keep you updated...And on a lighter note yes pulled spark plugs and were wet with coolant

[RustspecS13]

BHG. I just had the same thing happen to my car the end of last month.

Except it wasn't puffing burnt coolant out of the exhaust, it was streaming a river.

You can not reuse stock head bolts. I bought arps even though I'm running stock boost for now. That way I have more holding power and they are reusable. And they aren't too much more then stock bolts.

If its leaking between the turbo and dump pipe, it also sounds like there's a bad gasket there. If water can get out there air/exhaust can too.

~Alex

[sjbsuperman1425]

yea my friend used my name the other day.

i told him to buy NEW headbolts, but he insisted the stock ones were fine and the machine shop who machined the head said they could as well. Lesson learned..we pulled the head and found coolant in all cylinders. and yes, it was streaming coolant and burning it out the exhaust.

Cometic MLS and ARPs are on the way!

[RustspecS13]

if your using any multi layer steel head gasket, you need to machine the head and block to near mirror finish smooth. Other wise you'll be leaking oil and or coolant, possibly mixing the two.

That's why I used a OEM HG. Its fine up to at least 400WHP and its more forgiving then a MHG. Basically if the engine detonates, it will blow the stock head gasket. If you had a metal head gasket you'd get ring and piston damage first.

~Alex

[sjbsuperman1425]

that is a good point..i dont remember if the head even needed resurfacing. it was either 100% true or had very minor machining done. but you make a good point on the OEM gaskets, they are more forgiving. i'll let him know.

the last gasket kit he bought was from a place on ebay, and the gasket was quite nice i thought..but my friend and i were wonder if it was a combo of a s*** head gasket and bad headbolts.

[240daveTX]

ive reused headbolts on a KA with no problems.

[20DET]

ur not suposed to re use ne brand of head bolts for the simple fact that they are a stretch bolt...ie wen u tighten them they stretch..once undone u throw them away and get new bolts

[Carl H]

you CAN reuse the stock head bolts, altho on a boosted application its generally not a good idea.When i had the heads off of my vh45de I reused the stock bolts and they sealed fine, but if I had planned on boosting the engine or dumping some nitrous into it then they definately would have been replaced.so, that being said a stock or almost stock engine its fine but otherwise just toss in some arps.also the only aside to this being said is that you can only reuse the bolts IF the head gasket has not blown, normally if the hg blows then the studs are streached.

[sjbsuperman1425]

correct me if im wrong, but you can reuse stock head bolts, unless they are specified as Torque-yeild bolts.

as for me, after a headgasket or w/e, the ARPs will go in all my engines. its an easy thing to do and worth the $$

[Carl H]

you are correct in your thinking, look in any nissan service manual...does not say to replace the bolts when removed but it IS good practice to to prevent any potential headaches.

[S14-NEO]

they do say to measure the length of the bolts though to gauge the amount they have stretched and if they are passed a certain point to replace them.i could be wrong but i thought ive seen that in some FSM's before.

[sjbsuperman1425]

i dont think you can measure them like that. the stretch, i believe, is found when torque is applied to the bolt, not when it is un-stressed.

[Carl H]

actually thats how its done, the bolt streaches under load and remains streached when its removed...arp reccomends that in race engines you measure the unstreached bolts on intial install and compare to the unstreached bolt to see if the fastener needs to be replaced or not.its interesting stuff actually, well im also kinda a dork.