30 replies to this topic

[alanoo]

i guess your CC rad and water rad are piggy backed ?

I have tried a manual switch for the 2 spal fans on my PA rad (if you have same setup), it made no noticeable difference on track to either the inlet or coolant temps (tested on fast and slow a circuit). It does however cool the engine significantly on slow cool down lap and parking up - abit late when your racing!

What oil temps are you reaching?

I would expect it doesn't run any fans at all, they will just be a restriction to the flow when racing.

Indeed, verified on a friends racing SC VX, higher temps when fan installed and running than without any

[Mike (Cliffie)]

I have an NA and I fitted a single Tubby Ear to the passenger side and the net effect on running temperature was fcuk all. I can only hope it has increased the cold air feed to the filter otherwise it was a complete waste of time. Haven't got the kit to measure intake temps before and after.

[MartinS]

I hate to get all low tec, but I had some heating problems on my sc'd car. I added water wetter to the coolant and it definitely dropped the temps by a few degrees. Tests I read, also showed that they do seem to work. Redline water wetter came out high on the tests and thats what I used. I also added the cool running thermostat and again, did no harm and all has been fine since. Martin s

[Crazyfrog (Fab)]

I hate to get all low tec, but I had some heating problems on my sc'd car. I added water wetter to the coolant and it definitely dropped the temps by a few degrees. Tests I read, also showed that they do seem to work. Redline water wetter came out high on the tests and thats what I used. I also added the cool running thermostat and again, did no harm and all has been fine since.

Martin s

no problems on itb's.the alpha unit run it at 82/83 and the turbo's ears get some fresh air where it's needed running to ram air pipe in conjunction with them

happy motoring it's raining again

[alanoo]

So Chris, what did you do finally ?

[cnrandall]

Well I haven't fitted turbo ears yet as I want to wait and do something more in keeping with the cars lines over winter... What I did do is (with MASSIVE help from Winster): Remove rad fan Clean up air through nose box and block vents, seal gaps Remove mesh behind rad Fit a spoiler at the front of the rad exit (23% increase in flow according to Winster's calcs!) Fit an air/air oil cooler on top of the rear subframe fed by two NACA ducts in the quarter lights (will be fitting a fan behind this too) Used the laminova that was cooling the engine oil to cool the gearbox with big pump and surface mounted temp switch Changed to better Turbo fuel Results were... Water temp rock steady at 85 degrees Charge temps down to a rock steady 65 degrees and no heat soak of the chargecooler Detonation completely gone so the knock control wasn't retarding the ignition Oil temp rock steady at 120 degrees Haven't checked the gearbox temp stickers yet but it felt 100% perfect at all time which it didn't before Basically massive improvements. Over winter I think it's time to look at a larger chargecooler and different intake manifold and cams.

[alanoo]

Smart enough I was rethinking about this Klasen inlet manifold... if you consider this as an alternative to cams I guess we cannot say it is really expensive compared to cams (as you said they mean springs + retainers + blablabla....), but with the boot room you have maybe a oneoff simple design would be a good solution. Btw, do you know if your stock LET valves are sodium filled ?

[Winstar]

Well I haven't fitted turbo ears yet as I want to wait and do something more in keeping with the cars lines over winter...

What I did do is (with MASSIVE help from Winster):

Remove rad fan
Clean up air through nose box and block vents, seal gaps
Remove mesh behind rad
Fit a spoiler at the front of the rad exit (23% increase in flow according to Winster's calcs!)
Fit an air/air oil cooler on top of the rear subframe fed by two NACA ducts in the quarter lights (will be fitting a fan behind this too)
Used the laminova that was cooling the engine oil to cool the gearbox with big pump and surface mounted temp switch
Changed to better Turbo fuel

Results were...

Water temp rock steady at 85 degrees
Charge temps down to a rock steady 65 degrees and no heat soak of the chargecooler
Detonation completely gone so the knock control wasn't retarding the ignition
Oil temp rock steady at 120 degrees
Haven't checked the gearbox temp stickers yet but it felt 100% perfect at all time which it didn't before

Basically massive improvements. Over winter I think it's time to look at a larger chargecooler and different intake manifold and cams.

I noticed the spoiler on the pic in the other thread

Glad to be of assistance to help a Vauxhall Proton Lotus show the big boys a thing or two.

Those temps show there is deffinatly plenty of margin in the water temps to increase the CC size and get the inake temps down even further.

Just let me know if you need any more calcs, anything to prvent someone fitting those horrible turbo ears

[alanoo]

is that just a small lip to add some low pressure in the rad exit zone ?

[Winstar]

is that just a small lip to add some low pressure in the rad exit zone ?

yes it's just a flick up, abit like the VXT rear spoiler, infront off the rad exit. It creates a low pressure region behind it that pulls more flow through the rad.

[alanoo]

Yep easy and smart solution