NSW Corvettes

Technical Tips => Pre 84 => Topic started by: GPJ80 on November 26, 2006, 05:36:19 PM

Title: Over-heating problems 1970 vette
Post by: GPJ80 on November 26, 2006, 05:36:19 PM
Hi everyone , Got my 1970 vette 2 weeks ago , I'm having over-heating problems when mainly sitting in traffic , It has a electric fan mounted on inside of radiator and the top half of the fan shroud is missing , Have had the radiator re-cored and put in a 6 core and going to toss the electric fan and find a complete new fan shroud and re-install the original engine fan , Was wondering if anyone knows where you can get a replacment fan shroud
Title: Over-heating problems 1970 vette
Post by: jolinari on November 26, 2006, 07:22:59 PM
What is your email? will send you an attachment about it!
Title: Over-heating problems 1970 vette
Post by: MR 502 on November 26, 2006, 08:26:21 PM
.


  Hi GPJ80  i have a shroud from a 72 small block that i don't need

 Warryn 0415 416 619
Title: Over-heating problems 1970 vette
Post by: GPJ80 on November 27, 2006, 06:16:14 AM
My e-mail is gpj80@yahoo.com.au , Any help will be greatly appreciated - Thanks;43
Title: Over-heating problems 1970 vette
Post by: GPJ80 on November 27, 2006, 06:21:30 AM
Yeah thanks warryn , I think ill give ya a buzz
Title: Over-heating problems 1970 vette
Post by: 77CVT on November 27, 2006, 01:13:26 PM
Pretty much a C3's need a shroud!  There is nothing wrong with electric fans, it's just C3's suffer from poor stationary airflow.

They'll even overheat with the normal fan if there is no shroud!!
Title: Over-heating problems 1970 vette
Post by: Cameron 77C3 on November 27, 2006, 01:30:49 PM
Has the beast been converted to right hook?  If so did they move the motor over so as to fit the steering box.  If so you will find that the original fan shroud will not allow the fitting of the standard clutch fan.  This is because with the motor moved over the fan is no longer in line with the shroud.

In this instance the shot is to either:-

'A' get the shroud modified to align with the fan, i.e. an after market fibreglass shroud,

OR 'B' a suitable smaller fan that will fit while maintaining correct air flow.
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Title: Over-heating problems 1970 vette
Post by: 69VETTE on November 27, 2006, 01:55:54 PM
Hmmm.. thats a good point Cam,

However, if you look at Jolinari car, it sits pretty perfect with the conversion and all.

A shroud would definately help if its still running the original clutch fan.. maybe thats crapped out and need replacement?

Also check the thermostat and also the radiator cap?  They could be faulty.


M;36
Title: Over-heating problems 1970 vette
Post by: Cameron 77C3 on November 27, 2006, 02:58:06 PM
Some conversions are done without moving the motor.  It all depends on who did the conversion.  There were quite a few I believe back then.
Title: Over-heating problems 1970 vette
Post by: 77CVT on November 27, 2006, 05:01:09 PM
Most don't bother to move the motor.... but you knever know!

I had a C3 once that would overheat if it had a thermostat in it.  You would be surprised how much all the built up rust etc can contribute to higher temps.  When I rebuilt my C4 I had the block dipped and it now runs 10 deg C lower.
Title: Over-heating problems 1970 vette
Post by: GPJ80 on November 27, 2006, 09:39:51 PM
Yeah when i took the radiator to the repairer , He said it had been repaired a few times before but he seems to think it is the original radiator , So i had him remove one tank so that i could see inside and found the bottom was just rusty sludge partially blocking some off the tubes , The car had been sitting in a garage for about two years prior to me purchasing it
Title: Over-heating problems 1970 vette
Post by: jolinari on November 27, 2006, 10:04:01 PM
Quote
Originally posted by GPJ80
My e-mail is gpj80@yahoo.com.au , Any help will be greatly appreciated - Thanks;43


Ok sent...have a read, quiet intresting!