4ktq cooling shrouds

[Jim Green]

--- EBavely <veetesse at hotmail.com> wrote:
> Hello all...
>
> First off, I'm pleased to announce that the new
> engine for the 4ktq is doing
> just fine and is well under way in break-in stage.
> Some of you might recall
> the oil pressure problems I had with the first MC
> engine... I never found
> out what exactly the problem was, but swapping in a
> new block and crank has
> seemed to resolve the issue.
>
> Anyway, the 4ktq seems to run a bit warmer than I'd
> like (runs 1 or 1.5
> lines higher than half way on the gauge at the
> highest, slightly cooler on
> the highway) and I'm wondering among other things
> how important the cooling
> shrouds are to the radiator on the 4kq. Are these
> essential to the cooling
> of the engine?
>
>  I have the top plastic shroud, driver's side shroud
> (between the rad and
> the fender) plus a new homemade aluminum engine side
> shroud  (I've got the
> cardboard pattern if anyone wants to copy) installed
> on the engine.  That
> means that the only one I don't have is the very
> bottom one that connects to
> the radiator mounting stud and goes up to the front
> bumper skin.
>
> I can easily make the bottom piece and install it,
> but somehow I have a
> feeling this won't entirely cure the problem.  Of
> course, I expect the turbo
> to run a bit warmer given the added heat from the
> turbocharger and the
> location of the oil cooler (fairly big Setrab placed
> in front of the lower
> 1/4 of the radiator)...  Any ideas?  I did some
> archive searching and it
> seems like the stock 4kq radiator_should_be adequate
> in this application...

I'd try moving the oil cooler away from the radiator.
When I upgraded mine, my whole car ran cooler which
showed how much work it really does.  I'd bet your
just transfering oil heat into the radiator.  The
stock radiator is OK for street, but I'd at least
recommend re-coring it with a high efficiency core, or
getting an aluminum one for track use.

Glad to hear the car is running better!

=====
Jim Green
'89 90tq 034EFI, Haltech IG5
http://www.geocities.com/jeg1976/car_home.html

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