Fiecos Dan

wot charge temps have you seen
on full go?
on my

cossie i see 48 oC 2 sundays ago in afternoone at 7 k in 6th gear.
504bhp, 26psi, md240r turbo, AH 5oo inter,
water inj off,

xr2tt i see 58 oC hot summer days. at 6k rpm in 5th
170bhp, 10psi, 1.6 cvh, t25 on 2wd inter

Cheers Danny

Fiecos Dan

and?????????

Disabled Account

Danny,

504 BHP on an MD240R.....are you sure????

Disabled Account

https://passionford.com/forum/viewto...er=asc&start=0

Fiecos Dan

yeah mate,
dyno'd and thats not at full 32psi, actuater wouldnt hold boost.
on engine dyno got 447lb/ft@4958rpm at 30psi, 504.7bhp@6959rpm at25.9psi, esso super, act+37-39 oC.

2.0ltr yb on 8.6:1 c/r
p+f head
std bottom end, stud thro, cometic gaskets
pipier 509 cams
rs500 inlet
md240r turbo on 2wd mani

Disabled Account

OK..........504 BHP is amazing for that MD240R turbo, going by what I have experianced and what the manafacturer actually claims........so thats good

Getting back to your topic, the air charge temps that really matter are those shown while the engine in ON BOOST....So if you are seeing temps displayed that seem a bit high (say on the SECS monitor) than chances are that they are "heat soak" figures....i.e. the reading is not accurate from the moment you lift and the boost drops....from then on the ACT probe is influenced by the surrounding heat, and these readings can be ignored.

With a good inter-cooler like you AH 500, you should be seeing ACT's typically 10 - 12 ° C over ambient while ON BOOST.

Fiecos Dan

those temps are on a pectel moniter, and on a act moniter off mike rainbird thats fitted in the boost before throttle.
both were at 48 oC.

ps i know turbo dynamics have had a few other customers get 500bhp on the same turbo.

Disabled Account

Danny, but was the 48° reading a saved (memory) reading OR the actual reading showing on the move while on full boost?

Fiecos Dan

it woz a actual reading as we were goin, and it seemed to stop climin after about 140mph

Disabled Account

Then I would say nothing much to worry about - it was on a Sunday afternoon so ambient trmps of about 24 - 26° C and your ECU would be mapped to deal with ACT's of up to 80° anyway.

On my car (Es Cos with similar spec/power to yours - but on a T4 turbo) I would be getting ACT's of 36 - 38° C with genuine RS500 I/C ......slightly better than yours, but a bigger bonnet area and better throughflow of the air OUT of the bonnet area to help the I/C do it's job.....So all-in-all not much in it at all

Fiecos Dan

yeah none of my bumper is cut out yet,

how do you measure your temps?

on that sunday it woz about 15 oC

Disabled Account

Edited to say:
If temps were 15°C that Sunday, then with a good(ish) I/C set up you should be getting 25 - 27°C on boost readings IMO

Well, with Es Cossie's you get the ambient reading from the factory fitted outside temp sensor/dash display.......Then the ACT's I read from the SECS monitor - these are the values (temps) that the ECU is receiving -so in other words it's the ECU that gives the readings that it receives from the temp probe in the plenium.

Fiecos Dan

so on yours it always works out 10-12 oC over ambient at full chat in top gear?

is it the same in summer and winter?

sweet, cheers i know wot i'm lookin for

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On cold evenings it is more like 6 - 8° over ambient

Mike Rainbird

iTrader: (3)

Danny,
The ACT temps you are getting are what I would expect to see. You might improve this with some bumper / bonnet mods / reducing the boost / changing the intercooler (it's is not the best one out of the ones tested by PF mag) or by getting a more efficient turbo.

You could also try packing the bumper out with foam around the intercooler to ensure that all the air is forced through it - this would GREATLY improve things.

Oranoco

Usually see about 25° at full chat in 5th. They normally stay nice an low (until I stop and the heat soak starts )

Fiecos Dan

my inter is a AH fab 500 core with my own spec end tanks, to fit my car, bumper needs alot of cuttin, so gona have to see wot it does then.