hirdlej

iTrader: (31)

Rather than the dinky steam holes for the crossover tube on the back of the heads. I would cap them off and then perhaps consider knocking the plugs out of the back of the heads (casting plugs) and threading in fittings. Between the fittings install a quality line so the transfer of coolant can be accelerated between heads and transfer quicker. This has been mentioned before on ls1tech and I'm almost certain they sell a kit that will do this.

thunder550

iTrader: (70)

I just did a quick search for it and didn't come up with anything.

ZZebes

iTrader: (10)

Alright i don't have time to write out my whole theory right now but here is the jist of it

I think there are 3 causes of the #7 problem in the following order

#1 Coolant Flow
#2 Fuel Rails
#3 Intake

now the reason i picked that order is that coolant flow is the only constant across almost EVERY motor on this board, even people who have flow through fuel rails and aftermarket or car intake manifolds are still puking, as well as the fact that when you flip the manifold around it still blows 7 first

i am trying to find a stock 6.0L long block right now and put it on an engine dyno and drill the water jackets for temp probes next to each water jacket and in the heads so almost 20 temp probes to try and get a better idea of what is going on, i have a distribution of flow theory, also i think alot of the problem stems from the waterpumps (hiding from immenent **** storm) i have seen Electric water pump motors take some **** that would pop most motors and i think its because of this, when you take your foot out of the gas the water flow slows down when the RPMS drop but there are still TONS of heat in the motor, as well as our shift extensions causing coolant flow to slow down under the most high load situation our motors have (middle RPM High Load Lugging)

When i get home tonight i'll put up some pics and stuff i have taken

Bill Reid

iTrader: (14)

... and also in that coolant thread...

I chatted with Kurt about this as well and I seem to remember he wasn't pointing a finger at the intake...

Bill

thunder550

iTrader: (70)

Can anyone think of a fairly simple way to push cool coolant into the rear of the engine?

Wilde Racing

iTrader: (26)

what about after market electric water pumps?
Number seven will still be the hotest though

I also found some of the "fast guys" just add more fuel to that cylinder and move on with life....

thunder550

iTrader: (70)

I was thinking more along the lines of a running a separate hose from one of the water pump ports or radiator lines to the rear of the cylinder head or block.

Wilde Racing

iTrader: (26)

Please post up a link, that sounds like a good way to solve the coolant problem..

Bill Reid

iTrader: (14)

Wouldn't it be cool if an electric water pump could be setup like the C6 fans using a progressive controller... maybe overdrive it like a BAP does a fuel pump when a programmed temp is reached.

I think Slowhawk mentioned something about he tunes off of #7 only when he can. I suppose its not a problem with headers... not possible with manifold guys.

Bill

Bill Reid

iTrader: (14)

The 03-04 Cobra's with their notorious "tick" had a kit available (using factory parts) retrofitted back to a better cooling setup to reduce heat problems on the driver rear cylinder. The tick was apparantly due to running the rear cylinder too hot. Ford was replacing alot of heads back then... and aftermarket guys came up with a solution that used stock parts... knock out the rear freeze plug and tie it in to coolant flow.
So, yes I think it would be cool to see a kit like that that would improve coolant flow for us GENIII/IV guys... but I would also like to see some (before and after localized temps) proof that it worked.

Bill