Is there any way to tell the difference? I recently picked up a Mopar reman head that was done in the late 90s. I don't want to buy new valves if I don't have to, but I also don't want to make the mistake of running TBI valves. AM I stuck replacing them to be sure? If I replace them would it behove me to pick up a set of +1 valves? What about springs? I seem to recall a lot of talk about better springs which weren't breaking the bank, but I haven't followed that.
If I remember correctly, the turbo exhaust valves have a raised "T" on the face of the valve. (cubustion chamber side)
OK, mine don't have that. I'll grab a couple of old turbo valves from the garage and see what they say.
Wasnt there something about a magnet sticking much better to one type than the other?
Dont push the red button.You hear me?
Now that's interesting. Probably sticking to the non-turbo valves much better? I have some turbo valves out in my garage which don't seem to have the T and I have some in my basement which do have the T. I'm torn.Originally Posted by Vigo
I have some valves with the "T" out of a swirl head that I know came out of a turbo equiped engine. Are the ones you have without the "T" swirl or G head?
Again, I'm no expert on this subject, just remember the stuff I have laying around and remember hearing turbo valves had that stamp on them.
That's a good question. I'm pretty sure they're swirl head valves, but it's been a very long time. I don't think I even have any G heads in the house. Of course the turbo car that the valves without it on them had a very rough life so I guess it could have had the head swapped with a non turbo valve head.
The rebuilt one I have is stamped TS and CD. What does the CD stand for?
Turbo valves are suppose to be stainless steel so a magnet won't stick to them. I just checked some turbo exhaust valves and a magnet will stick to the stem but not the head.
Off to get my magnet!
OK, I'm pretty sure the ones in this head are regular valves. The seats are pulling on the magnet so I'll get something to rotate the cam and get one off the seat first. It's a night and day difference between the intake valves and the turbo exhaust valves on the face of them.
I pulled a turbo valve and one of these valves. What a difference with the magnet when you pull them out of the head. I'll have a video up shortly.
They are supposed to be inconel, and two piece, so the stem will attract the magnet, but the head won't...
Mike
PS Some stainless steels are magnetic, but most aren't.
"The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government - lest it come to dominate our lives and interests." - Patrick Henry
Bad laws are the worst sort of tyranny.
- Edmund Burke
No way. They used inconel for our valves? If so you'd better believe that I'll be touting that from the rooftops when talking about these motors.
That's what I've read, makes sense as stainless isn't that great for heat, and new engines aren't something you'd want to warranty.
Mike
"The Constitution is not an instrument for the government to restrain the people, it is an instrument for the people to restrain the government - lest it come to dominate our lives and interests." - Patrick Henry
Bad laws are the worst sort of tyranny.
- Edmund Burke
Well, that's pretty awesome!
- - - Updated - - -
Now what should I do about these springs?
Hooray, i had a vague notion of a thing that turned out to be correct. My internet expert status: Reconfirmed!
Dont push the red button.You hear me?
Yeah, it works really well. I think it's a pretty neat trick.Hooray, i had a vague notion of a thing that turned out to be correct. My internet expert status: Reconfirmed!
If you need a set of turbo ex valves, I have a set lying around you can have. Springs and all.
Moparzrules did the magent trick years ago, it was in the FAQ's which I doubt have been fixed,
TS is Tapered shroud, kinda like a factory porting job.
CD is Cross Drilled.
TBI engines had softer springs, so either test them or buy new ones.
http://www.turbo-mopar.com/forums/sh...=exhaust+valve
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