cast or forged

[glhsken]

No, That is a different mod. Joe O'Conner's. That is NOT a street car.

basic mod is drill and tap a hole in the waterpump housing AFTER the impeller. Run a line up from it to the Drivers side of the head. Pumps COOL coolant into that area.

[DakotaKid]

The coolant does not circulate enough around cylinder #4, it gets hot and hotter.

When the modification is made the coolant is taken directly from the water pump to the side of the head, sending cool water to the #4.

It only affects the head cooling, so I do not think the car will heat up slower or faster.
You probably will not notice.

-Bryan

[turbovanman]

Quote:

Originally Posted by TrboVan The coolant does not circulate enough around cylinder #4, it gets hot and hotter. When the modification is made the coolant is taken directly from the water pump to the side of the head, sending cool water to the #4. It only affects the head cooling, so I do not think the car will heat up slower or faster. You probably will not notice. -Bryan

So if it doesn't make a difference-why do it?

[DakotaKid]

Quote:

Originally Posted by turbovanman So if it doesn't make a difference-why do it?

Are you kidding me?

Reread what I posted.

[glhsken]

Re-read what Bryan wrote...

[gakali]

The way I understand it, because of the way the coolant passages are in the head, the back side of #4 doesnt get as much coolant flow by it as the other cylinders, causing that cyl to run a bit hotter. Even when the stat is open, the coolant flows in the path of least resistance - straight through the stat kind of bypassing #4. Of course there is flow by #4 just not as much as the others. Under extreme conditions with all else being equal, #4 is likely first to see the highest combustion temperatures. I think it would be best to run the 195 stat with this mod because the flow bypassing the stat. would definately make it run cooler. Makes sense to me but I doubt I'll do it.

[turbovanman]

Quote:

Originally Posted by TrboVan Are you kidding me? Reread what I posted.

Ok, sorry, my bad, lack of sleep, your saying it won't make a difference in the way it heats up, correct!

a 1000 apologies.

[glhsken]

O'Conners method WOULD make a difference. Gary's would not as is it still t-stat controlled

[turbovanman]

I will try the waterpump to head mod as described when I change my engine!

[Aries_Turbo]

hey ken, what size line is recommended and at what point on the head is recommended? near the freeze plug? anywhere in particular. thanks

Brian

[glhsken]

Reeves Knows all that stuff. Actually not a big line.. 1/4" or 3/8". Reeves used braided. I know which side of the cam center is important, not sure which though. I know on my head it's towards the TB.. But I know 1 was set up off.. Not sure if it was mine

[Aries_Turbo]

thanks ken... can you have reeves shoot me the details or a pic or something? thanks

Brian

Quote:

O'Conners method WOULD make a difference. Gary's would not as is it still t-stat controlled

Thats why you ditch the thermostat all-together.

[gdonovan]

Quote:

Originally Posted by glhsken O'Conners method WOULD make a difference. Gary's would not as is it still t-stat controlled

I have no stat, running cool was never a problem with the Reliant... in the past anyways.

[glhsken]

We're talking about street cars I thought. I sure wouldn't want to run down the road without a t-stat.