Bogging and smoke after replacing h2o pump and seals
#16
I pulled out the oil cooler today. These pics are after I've cleaned up the parts. I noticed that the o-rings aren't the green ones. Thus, I still have old ones. I can't obviously find anything that's broken, though. The oil pressure relief valve only looks like a spring. This is not what I saw on some how-to articles.
#17
Rennlist Member
That's the normal OPRV for pre-87 cars. There's a retrofit part, but it's not any better than the one you have...just put it back in and use the alignment tool
#18
On another thread, I read that if water were leaking into the combustion chamber because of a bad head gasket, plugs would look like there were steam-cleaned. I just pulled mine out and confirmed that they are not steam-clean clean.
I know that it doesn't guarantee that my head gasket is not leaking from water-to-oil passages but there is still hope. A leak from water to the combustion chamber would guarantee the need for a head gasket.
Yes, I eventually want to change the head gasket but I want to take things one step at a time.
Thanks again to all. I'll keep you posted.
I know that it doesn't guarantee that my head gasket is not leaking from water-to-oil passages but there is still hope. A leak from water to the combustion chamber would guarantee the need for a head gasket.
Yes, I eventually want to change the head gasket but I want to take things one step at a time.
Thanks again to all. I'll keep you posted.
#20
Water in the oil (less lubrication) wouldn't do that? Come to think of it, when my 4runner had a blown head gasket, it ran fine except for the steam out of the exhaust when I accelerated. I had water in the oil too at that time.
#21
Rennlist Member
Your bearings suffer, but no, you would hear rod knock before you lost power (and when you lose power it would be sudden and obvious that major **** hit the fan)
#23
Are you Van Svenson on YouTube? If so, you've got some helpful videos.
Last edited by alpinewhite; 09-27-2016 at 12:21 PM.
#25
#26
Rennlist Member
No, it's called a "90 degree torque angle" - meaning you turn the nut 90 degrees, which stretches the head stud a very specific amount, which applies the correct clamping force. It's all outlined in the factory service manual (available in PDF online).
Glad you like the videos! (A clutch one is currently in the works...)
Glad you like the videos! (A clutch one is currently in the works...)
#27
No, it's called a "90 degree torque angle" - meaning you turn the nut 90 degrees, which stretches the head stud a very specific amount, which applies the correct clamping force. It's all outlined in the factory service manual (available in PDF online).
Glad you like the videos! (A clutch one is currently in the works...)
Glad you like the videos! (A clutch one is currently in the works...)
https://rennlist.com/forums/944-turb...uing-head.html
Basically, here are the steps from what I understand:
1. Torque each nut to 20 Nm in the proper sequence.
2. Tighten each nut another 90 degrees using a breaker bar, again in the proper sequence.
3. Tighten each nut again another 90 degrees.
At the end, each nut would've been turned a half revolution after being torqued to 20 Nm. Is my understanding correct?
#28
Rennlist Member
#30
I'm assuming that a new head gasket set comes with 10 new head nuts. Whose set should I get? AutoZone has a FelPro set for $168 (http://www.autozone.com/gaskets/head...?checkfit=true).
When I redid the Ford 460 on my boat, it was recommended to spray the head gaskets with copper head gasket material and let them dry prior to installation. From Van's video, I see no such thing. I'm guessing that the copper spray is not used on the 944.
I guess that you and I are on the same page. My '83 sat in an open New Hampshire backyard for at least 10 years. I pulled the head and later the rest of the engine. The HG was cracker crumbs. The car is down to a basic shell now and almost ready to receive the new (rebuilt) Torque tube, the rear end, the gas tank, and the engine, and both suspensions . It was not a totally complete car, so many new parts had to be sourced for it. Still plugging along after 3+years...and many, many dollars later...
Last edited by alpinewhite; 09-28-2016 at 03:59 AM.