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PostPosted: Tue May 29, 2018 8:35 am 
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Full Pressure Turbo

Joined: Tue Dec 16, 2008 6:56 pm
Posts: 648
Location: Sunny Devon!
Car Model: 96 V4, 9000 Aero
Based on my own experience of V4s: I've had three over the years. The first was bought brand new in 1969, and after a couple of years taken to SAH for a "stage 1" tune (Weber 28/36 and sports exhaust). It never overheated in seven years of ownership. The only time the needle ever strayed over "N" was when sat in traffic for long periods on hot days. Even then, it never got anywhere near the red zone.

Car no.2, a 1972 and rather beat up 95 with a leaky water pump. Fixed the water pump, but it occasionally showed signs of overheating when stuck in traffic for long periods on sunny days. Solution: Re-cored radiator with an extra core. It never overheated again!

Current car: 1971 V4, with a "stage 1" tune (Weber and exhaust). Occasionally over heated, but only when stuck in traffic on very hot days. Even driving to eastern Germany (hours on the autobahn, doing 70+) in mid-summer, it never showed any sign of overheating, until I got stuck in a contra-flow around Hanover! Then it got into the red, but popping the bonnet kept it under control. On my return, I fitted a re-cored radiator with an extra core. It hasn't over-heated since, despite running with no fan at all for about six months!

The recored radiator cost less than the quoted figure for the "water-less" coolant (admittedly, it was six or seven years ago, now!).

Conclusion: The cooling system was adequate for the UK climate back in the day, but as the cars are getting on a bit now, the cooling system needs to be in tip-top condition to cope with traffic jams in the summer. As long as you are doing at least 20 mph, you should never have a problem with cooling. If you are, something is wrong!

Modern radiator cores are much more efficient than those of yore! Adding an extra core will provide more than adequate cooling. Also bear in mind that good anti-freeze will improve the cooling considerably over plain water. (The Merlins used in most British aircraft during WW2 used Ethylene Glycol - anti-freeze - as a coolant for that very reason). Anti-freeze isn't just for winter!

My radiators were re-cored by Feltham Radiators, who specialise in classic cars. I can thoroughly recommend them.

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Pete


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PostPosted: Tue May 29, 2018 9:29 am 
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Saab Nut
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Joined: Sun Jul 29, 2007 9:32 pm
Posts: 1135
Location: Bath/ Dublin
Car Model: 8V-V4
A Merlin in a 96, now that's an idea to avoid overheating!

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www.saabv4.com


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PostPosted: Tue May 29, 2018 9:57 am 
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UKS Addict
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Joined: Mon Feb 19, 2007 4:12 pm
Posts: 7847
Location: Portsmouth
Car Model: 96 V4 & 9-3 Turbo-X
I was only thinking this morning that my next kit car (not that i've finished the first!) should have a Merlin engine.

It would be nice to have 4 of them for that proper Lancaster burble, but i'm not sure i could fit them all in.

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'75 96 V4 Anniversary Restoration Project
'09 9-3 Turbo-X Wagon No. 38
B204 Haynes Roadster Project


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PostPosted: Tue May 29, 2018 8:11 pm 
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Full Pressure Turbo

Joined: Tue Dec 16, 2008 6:56 pm
Posts: 648
Location: Sunny Devon!
Car Model: 96 V4, 9000 Aero
John Dodd's Merlin powered "Rolls-Royce"

Image

:shock:

I remember seeing it run with its original body, that looked a bit like an overgrown Ford Capri. That body was badly damaged in a fire, I believe, and this is its current form! Apparently it does 2 mpg........

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PostPosted: Tue May 29, 2018 8:19 pm 
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UKS Addict
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Joined: Mon Feb 19, 2007 4:12 pm
Posts: 7847
Location: Portsmouth
Car Model: 96 V4 & 9-3 Turbo-X
Its not a looker is it!

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'75 96 V4 Anniversary Restoration Project
'09 9-3 Turbo-X Wagon No. 38
B204 Haynes Roadster Project


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PostPosted: Tue Jun 05, 2018 7:07 pm 
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UKSaabs Trader
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Joined: Sun Mar 20, 2011 2:08 pm
Posts: 4190
Location: West Sussex
Car Model: 9-3 9000 Aero 96 V4 Yamaha FJR
Mutley is even sniggering at it in Whacky Races!

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http://ccautomotive.co.uk
rust correction/prevention


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