mgb-v8
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Re: Running hot under load during hot (90F degrees+) days

To: mgb-v8@autox.team.net
Subject: Re: Running hot under load during hot (90F degrees+) days
From: Bill Zenkus <mgb_zenkus@yahoo.com>
Date: Tue, 18 Jul 2006 05:31:41 -0700 (PDT)
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In-reply-to: <000401c6aa1a$5b9aa190$d950cf18@yourw92p4bhlzg>
Reply-to: Bill Zenkus <mgb_zenkus@yahoo.com>
Sender: owner-mgb-v8@autox.team.net
Thanks to Bruce, Jim, Ed, David and Don for the great advice.


(I tried to organize the steps from everyone in this email so other listers 
would have a good single point reference if struggeling with a heat problem.)
 
Jim, the details on my engine -   bored .040 over and stroked with a 300 crank 
for a displacement of 265 c.u. or 4.3 liter. It has a CR of 10:1,  is running a 
little rich, timing is set for 10 degrees advanced at idle.  Runs great- 
constant pull from idle to 6500, no pinging or such. The only timing/jetting 
indication issue I have is under hard decelleration the engine pops a little 
out of the exhause (rich or dwell  - I think?)  
 
As many mentioned the need to vent from under the hood,  I do have louvers in 
the hood just over the back of the exhaust  (Yes, block huggers Jim,) plus 3 
inch holes in the fenders directly below the louvers into the wheel wells.
 
I will fabricate the duct for the lower radiator, but need to wait until I get 
a better front facia. (The air dam I have is NOT vented at all.) I will get 
either the LE front spoiler or the air dam with the cutout for the radiator. 
(Looking on EBAY now).
 
Another good point is that I may need a top seal as well, I will check that 
clearance and install one if required. 
 
I will cut my coolant ratio down to around 25% and add a water wetter, The 
thermostat change to 180 from 160 confuses me but your experience and the 
actual results are good enough for me - so I will do this also (second to last 
step , next to last step being change out the radiator, after all these other 
changes as a last step, if required, I will add the oil cooler)
 
I will implement all of these recommendations and believe I will resolve my 
heat issues soon.
Thanks again for all the great advice and I hope to see you soon at one of the 
upcoming meets.
 
Bill Zenkus
Email: mgb_zenkus@yahoo.com

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