turbo head vs. non turbo head

[VWSmokr]

re. aftermarket replacements: Topline has stated that all the current aftermarket heads (that they deal with) are of the proper alloy for turbo or n.a. use, though that wasn't always true.

OTOH I've no clue how/if that relates at all to the cheap stuff from the lowest Chinese bidder. AFAIK Topline doesn't go with those sources. I won't knowingly purchase or use one either.

J.R.
SoCal

[Dean Erickson]

I have 3,000 miles on my turbo engine with the 1.5 pre cups. I used loc tite to help hold them in. Jack form wvdieselparts told me to use loc tite. The red stuff.

[Rabbit TD]

Isn't the biggest difference just in the exhaust valves themselves or is there really even a difference in them also.  If black smoke means high EGT's then I wonder why the N/A's don't have the supposedly stronger valves instead.  Like I said though I don't know if there is actualy a difference in them.

[Rabbit on Roids]

Isn't the biggest difference just in the exhaust valves themselves or is there really even a difference in them also.  If black smoke means high EGT's then I wonder why the N/A's don't have the supposedly stronger valves instead.  Like I said though I don't know if there is actualy a difference in them.

my grandpa has dropped plenty of exhaust valves on n/a engines. he is on his fifth engine in his caddy just because it keeps eating valve heads. and i know i read somewhere that the turbo heads have sodium filled exhaust valves.

[arb]

Isn't the biggest difference just in the exhaust valves themselves or is there really even a difference in them also.  If black smoke means high EGT's then I wonder why the N/A's don't have the supposedly stronger valves instead.  Like I said though I don't know if there is actualy a difference in them.

my grandpa has dropped plenty of exhaust valves on n/a engines. he is on his fifth engine in his caddy just because it keeps eating valve heads. and i know i read somewhere that the turbo heads have sodium filled exhaust valves.

I doubt VW used sodium valves on consumer vehicles. They are expensive and very hazardous if the shade tree mechanic decided to cut one open, especially if he tries to put the resulting fire out with water. When I was at Federal Mogul, we had lots of restrictions on who could buy them.

[rabbitman]

I doubt VW used sodium valves on consumer vehicles. They are expensive and very hazardous if the shade tree mechanic decided to cut one open, especially if he tries to put the resulting fire out with water. When I was at Federal Mogul, we had lots of restrictions on who could buy them.

Vw used sodium valves in some air cooled engines and the TD's, cutting then opened isn't a hazard, you just throw it in a bucket of water and it neutralizes the sodium.

[arb]

I doubt VW used sodium valves on consumer vehicles. They are expensive and very hazardous if the shade tree mechanic decided to cut one open, especially if he tries to put the resulting fire out with water. When I was at Federal Mogul, we had lots of restrictions on who could buy them.

Vw used sodium valves in some air cooled engines and the TD's, cutting then opened isn't a hazard, you just throw it in a bucket of water and it neutralizes the sodium.

I learned something new on VW. Good to hear they are not shy. :-D

Sodium burns underwater and is likely to spontaneously ignite when you cut it open in air unless it is VERY dry air... Look further down at this scientist catching his kitchen on fire with a sodium filled valve. http://www.periodictable.com/Elements/011/index.html

[rabbitman]

I doubt VW used sodium valves on consumer vehicles. They are expensive and very hazardous if the shade tree mechanic decided to cut one open, especially if he tries to put the resulting fire out with water. When I was at Federal Mogul, we had lots of restrictions on who could buy them.

Vw used sodium valves in some air cooled engines and the TD's, cutting then opened isn't a hazard, you just throw it in a bucket of water and it neutralizes the sodium.

I learned something new on VW. Good to hear they are not shy. :-D

Sodium burns underwater and is likely to spontaneously ignite when you cut it open in air unless it is VERY dry air... Look further down at this scientist catching his kitchen on fire with a sodium filled valve. http://www.periodictable.com/Elements/011/index.html

Well Alaska air is pretty dry I guess. I used a die grinder to cut mine, plenty of sparks there.

[rabbitman]

Here's the measurements of one of my prechambers: barrel: 1.075" flange: 1.260
Head number is 068 103 373 F, it came off my JK code engine and I have no idea if it's the original head.

[arb]

I doubt VW used sodium valves on consumer vehicles. They are expensive and very hazardous if the shade tree mechanic decided to cut one open, especially if he tries to put the resulting fire out with water. When I was at Federal Mogul, we had lots of restrictions on who could buy them.

Vw used sodium valves in some air cooled engines and the TD's, cutting then opened isn't a hazard, you just throw it in a bucket of water and it neutralizes the sodium.

I learned something new on VW. Good to hear they are not shy. :-D

Sodium burns underwater and is likely to spontaneously ignite when you cut it open in air unless it is VERY dry air... Look further down at this scientist catching his kitchen on fire with a sodium filled valve. http://www.periodictable.com/Elements/011/index.html

Well Alaska air is pretty dry I guess. I used a die grinder to cut mine, plenty of sparks there.

Your air has got to be better than Arizona air :-) If I had a breathing problem, I'd go to Homer before Phenix. A friend of mine who is a top Neuro-radiologist tells me Homer is his most favorite place in the world. I need to visit some day.