Sleeve Yancy Sleeve

http://www.theexperience.com/engine.htm

 

Everyone was a great help right away and I was able to add the sleeves to my package before the block was sent to be machined. It's getting sleeved in Texas by a shop that has a CNC machine and has done at least 4 other sleeve jobs on the VQ. Thanks to Gman, Shariff and everyone else.

 

Who can tell me a fool proof (I'm the fool) way of knowing this is happening?

 

there isnt really a positive way to know if its headlift versus a typically blown headgasket versus a sunken sleeve until you pull it all apart.

 

The first signs are air in your cooling system, no heat in the cabin, and an overflowing coolant resevoir, followed by engine overheating.

 

good luck with your sleeved motor..many more will be coming soon!

 

I remember one friggen cold night out in west Los Angeles in 2004, a Street Fury TV show was being filmed. A big guy with a Silver G35 Sedan with a PE kit, had those same symptoms.. Since the block was sleeved, I thought "Impossible" ...

By the way, I understand Gurgen just graduated and is moving back to So Calif.

Thanks Sharif for clarifining those symtoms... I'm glad to hear that Yancy was able to hook it up..

Cheers Amy -

 

Could the boiling over of the coolant just be that the cooling system is not adequate enough? I haven't had any coolant spew out of my overflow tank, but it has been filled up after hard runs. This only happens on repeated abuse at 16psi. When I repeatedly beat on the car at 16psi not only does the overflow tank fill, but my water temp goes up to 230 degrees.

Today it was kinda of hot and at 10psi the water temp went up to 230 degrees. I haven't heard of anyone experiencing "head lift" @ 10 psi which is why it has me thinking could it just be that our cooling system is not adequate enough. If we had a cooling system that could hold more volume would it take care of this?

 

It couldn't hurt. Supposedly, someone is working on a new setup that would almost double the capacity of our stock cooling systems, and would involve a custom radiator.

 

Who's working on this system?

 

Hey Gman,
I can't remember for sure, but don't you have a PE upgraded radiator and thermostat? You raise a good question - what else other than an upgraded radiator and maybe water wetter can we do to keep a high FI Z cool?

 

+1

 

I have the PE radiator, nismo thermostat, and greddy breather tank. After seeing my water temps go up today at only 10 psi it made me think if this "head lift" issue isn't really just an inadequate cooling system issue.

 

well for me there is no question. mine is getting so bad now i can get on it and watch the fluid hit my windshield, hahaha. i have 2 cars now to finish before i have room in my shop for mine. i can't wait to see what the head gasket looks like.


WAIT A MINUTE. just had a light bulb go off over my head!!!! now this is a slight stretch, but worth saying in the open. now, the cooling passages around the cylinder and head are kind small. what are the chances that the water around the cylinders goes into a near instant boil during hard throttle and that is the reason for puking out fluid. hopefully that is not the outcome, as that will be nearly impossible to rectify.

 

Maybe not with a sleeved motor with revised coolant passages and a different material around the combustion chamber. Maybe???

 

That's what I was going to ask next. I believe Gman and overZealous are non-sleeved, correct? If the motor is sleeved, would the same issue arise (if that is what the issue is)?

 

Would PURPLE ICE help ?

 

what fans are you running? Believe it or not, these can play a big part as well. a pair of high cfm fans can make a big difference.

 

well the stock steel sleeve is very thin. the rest is alum. so the heat transfer should be better with the stock cylinders i would assume. but the aftermarket sleeves being all steel, the heat transfer would be slower..... bah, i really don't think that is the problem, but just trouble shooting other possible alternatives. when my motor comes apart (very soon) i will inspect the head gaskets and should find exactly where the problem lies.

 

Seems to me that using 1/2" head studs would do a better job at preventing this than sleeving the block.

I mean, my mother's 03 Altima has the same symptoms, air in the cooling system, thus making the heat work improperly and such. I'm not going to assume it's head lift, it was just a radiator cap that the Nissan dealership claimed was a POS.

I can't wait till Scott rips apart that block so we can try to determine the real cause of headlift. To me it seems like it's something wrong with the coolant system. If its not I'd look to more clamping force using larger head studs.