Multiple Pass Radiators?

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YellowCat
Posts: 2
Joined: Mon Jan 04, 2016 11:51 pm

Multiple Pass Radiators?

Post by YellowCat » Fri Jan 15, 2016 9:21 pm

After 39 years of Tiger ownership I have at last signed up to the forum as advice is sought.
After a stressful M25 trip I am trying to 'cool my Tiger' I am in the process of working through the usual recommended modifications. I recently visited Serck Motorsport [who were very helpful] they could rebuild my current rad or supply one in aluminium. They advised that they could fit plates/baffles into the side tanks as this would direct the flow back and forth across the rad. Does anyone have any experience or thoughts as to whether this works or not?
I have also bought a bonnet [not yet painted & fitted] with cooling louvres cut into it towards the rear again any thoughts if this will make any noticeable difference, I already run with the bonnet raised at the rear.
All advice gratefully received.
Geoff.

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gvickery
Site Admin
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Joined: Sat Aug 13, 2005 11:45 pm
Location: Surrey

Post by gvickery » Fri Jan 15, 2016 10:03 pm

Geoff

This run down is always worth reading before doing anything much.

http://teae.org/cooling-the-tiger

pjsv8
Posts: 7
Joined: Mon Apr 18, 2011 5:43 pm

Multiple Pass Radiators

Post by pjsv8 » Sat Jan 16, 2016 6:15 pm

Hi Geoff,
Serck Motorsport have the right idea you need to fit baffles into the side tanks, I modified mine a few years ago and haven't had any problems since, you can either re-route the top hose to the R/H side tank and fit a baffle 1/2 way down, or leave it as standard and fit staggered baffles to both tanks, I've not tried the second method as the first one works just fine,
Regards
Paul

bigbob
Posts: 378
Joined: Wed Aug 19, 2009 11:31 am

Post by bigbob » Sun Jan 17, 2016 3:57 pm

A simple & effective mod is to blank off the horn holes either side of rad & seal gap below rad. All air entering through the grill then goes through the radiator & not spilling out around it. An electric fan on thermostatic switch is also invaluable.

YellowCat
Posts: 2
Joined: Mon Jan 04, 2016 11:51 pm

Multiple Pass Radiator

Post by YellowCat » Wed Jan 20, 2016 11:55 am

Gentleman,

Thank you for your response. Paul, do you run a standard volume water pump? Some of the specialists recommend a high volume unit others do not.

I just took delivery of a 'hole kit' [ebay]. Its on the jobs to do list!

I am using that link for 'what to do'.

Regards,
Geoff.

bigbob
Posts: 378
Joined: Wed Aug 19, 2009 11:31 am

Post by bigbob » Thu Jan 21, 2016 12:43 pm

If you really want to go for it, I've got electric water pump instead of belt driven. Means you still get full circulation even when idling in traffic. Never had issues since I fitted it.

pjsv8
Posts: 7
Joined: Mon Apr 18, 2011 5:43 pm

Multiple pass radiators

Post by pjsv8 » Thu Jan 21, 2016 5:13 pm

Hi Geoff,
Mildly tuned engine with standard water pump, have a look at the classifieds, the Tiger for sale has had the mod done, cooling fans wouldn't go amiss either if you're stuck in traffic a lot.
Paul

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