!! 5-speed TGP/TSTE ALERT !!

[twinturbosedan]

the TB heater gets coolant from the same place that the heater core does - the area right below the thermostat on the lower intake manifold.  likewise, coolant returns from the TB heater to the same place that coolant from the heater core returns to - right above the waterpump.  so it really shouldn't matter if one is blocked off; there is still circulation going on.  unless there is a heater control valve under the dash?  i've never had to replace a heater core so i'm really not sure if there is one or not.  i was under the assumption that coolant always flowed through the heater core.

regardless, i have had zero problems with the way mine is and i had the TB heater lines blocked off long before i ever put the turbo in.

[Invasion1]

ya its a constant flow through the heater core and just some Vacuum controled doors seal it off when you don't want heat...

I have removed the whole TB heater thing totally and even removed the little bowl on the TB itself no issues at all.

[TGPilot]

Thanks for saying something Jeff...but I look at every idea someone throws me with a fine toothed comb. I would not have done the JMHCPM if I had not looked at the flow though the turbo, block, or restriction to the heater core. I was concerned about added pressure to the turbo coolant seals and that is not an issue either. If anything you are allowing for more flow through the turbo while not restricting the heater core. The TB heater is a waste of space and time. No need for it in the dead of winter and especially in the heat of the summer.

Like Josh said they flow out of the same area which is before the T-stat to allow for free flow. The heater core is a constant flow like Dave said so no issue there.

Thanks though!

-Kenny :icon_cool:

[Jeff M]

Ok good, like Kenny says, just double-checking, even if nothing has happened to anyone's engine yet, did not want to wait to consider something like this.... maybe later  :icon_cry: :laugh:.  So, good to hear the flow still keeps going :icon_mrgreen:, and I know there is no shut-off in the heat core area on the TGP/TSTE so no worries there either (good thought there too) :icon_biggrin:

Jeff M

[twinturbosedan]

i got rid of the JMHCP mod today :laugh: and i'm now using the TGP specific heater core supply pipe.

Kenny, my downpipe is rubbing against the same spot on my heater core line as yours was.  from what i can tell, the problem has nothing to do with the 5-speed conversion - it would rub right there even with an automatic.  Dave, how did you bend yours?  i tried to bend it downward in that spot (away from downpipe) but didn't have much luck.  i wrapped mine with Thermo-Tec ThermoShield brand reflective heat tape so the downpipe won't wear a hole in it.  should work fine that way.

[Invasion1]

been so long i forget.....i have to throw back in my clutch MC and Slave tomorrow so i will have a gander then for ya and for myself as a refresher..

[twinturbosedan]

well the more i think about it the more uncomfortable i am about using the TGP-specific heater core supply line :icon_confused: partly because of it being so close to the downpipe but also because it's 16 years old, replacements aren't available, and replacing it would require removing the downpipe, turbo and crossover pipe and that would suck.  it's not something i could trust on a long road trip.

i'm definately not going back to the way it was.  i think i'm going to make my own line using an NPT-to-AN fitting in the LIM and 5/8" aluminum tubing (with a flexible section before connecting to the heater core inlet of course).