[urq] Dialynx rad vs Stock rad w/ Aux rad delete

[Ingo Rautenberg]

Maurits,

If the radiator fits and you're not upgrading the turbo (aside from  
normal function) I doubt this should pose a problem.  I'm still using  
my original radiator with the auxiliary bypass.  I haven't yet  
installed the Dialynx (which I bought years ago when I bought my  
'83.  And I have the K24 upgrade (which necessarily heats the  
coolant) and have boost at 2.2 bar (1.2 bar over ambient) and haven't  
had any issues. IME the auxiliary radiator serves to impede airflow  
more and isn't all that useful.

Best,

Ingo

On Sep 30, 2006, at 7:26 AM, Maurits Jonkergouw wrote:

> Recently my main rad has gone bad (amongst other things) and needs  
> to be replaced. The aux rad was deleted a long time ago (also  
> leaked) and never noticed increasing water/engine temps, not even  
> during high speed travelling in summer. Although I have to say  
> during this hot summer my exhaust manifold cracked at several  
> places, but that's just coincidence :-)
>
> So, do we really need the aux rad? IIRC my water temp only went  
> from 1 bar 'below normal' to 'normal', but I must say this was with  
> a very inefficient turbo.
>
> But what if the turbo is back up to spec again (after rebuild),  
> what if the exhaust manifold is replaced with the performance  
> Dialynx EM? More performance is more heat.
>
> I was looking at the high capacity rad from Dialynx but it's not  
> cheap. I do have a good stock 48cm main rad from a CoupeQ but it  
> lacks the extra aux rad header. I've read in the archives a few  
> people had no problems what so ever removing their aux rad while  
> keeping the stock rad.
>
> What do you think, is it safe to delete the aux rad and keeping the  
> stock rad considering a Dialynx EM and rebuild turbo will be fit ???
>
> To be honest with you, I need to cut some repairs in order to save  
> money. If the aux rad could be removed while keeping the stock rad,  
> this would be a major cost-saver.
>
>
> Regards,
> Maurits
>
> 1986 GV (Swiss WR)
> 1985 CGT KV
> 1982 GL DD
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