mod update e4 , intercooler :O)

[And@fcm]

what temperature differences were you getting with the previous intercooler?

Andy

 

[steelyblue]

looks well!

 

[evo arm's m7960]

what temperature differences were you getting with the previous intercooler?

Andy

hi was getting inlet temps of around 20c to 30c more than outside temps " not manifold temp " sensor befor the throttle body , on fast road driving at 1.3 bar now seeing 3 - 10 c at 1.6 bar .

was told that it went to 41c on the rolling road very quickly once the boost was turned up

and took it out for a 40mile run the other evening a and b roads
and the most i saw was 15c over , went up when i got in to some traffic but went straight back down once i got moving again .

glad i changed it for peace of mind really but it seams to work really well :O)

hope that helps


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[evo arm's m7960]

hi guys just a quick update

just had the chance to get my car back on the rolling road after fitting this cooler .

and there was good and bad results .

the cooler works perfect even after 15/20 mins warming up and 3 power runs the temp differance between the in temp and the out side temp was 1 deg c .

well impressed

the larger cooler also has had the effect of smoothing out the boost curv and making the car nicer to drive off boost in traffic and less feirce when it comes on boost and never seams to lose power due to heat soak .

but ...

the down side is the boost peeks almost 1000 rpm later and the power starts to drops off almost 1000rpms sooner ,not that you can feel it on the road but easy to see on a graph


also loosing around 10 /15 bhp at the top end .

the conclusion seams to be that its just a little to big for my turbo " tomie arms m7960turbo "to cope with " didnt think you could over intercool but seams you can . doh !

the car still makes 400 bhp with it fitted but i think the turbo must be working hard to fill the cooler at higher rev's . so would rather not blow it up ..

so will try a 3" cooler next and save this one for next year when i hope to build a new engine and find a bigger turbo..

if you dont try these things you will never find out if they work i gess ..


:O)


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[tmus]

so to conclude the intercooler itself is a good buy?

is it worth buying a ebay cooler? recommend?

 

[And@fcm]

did you have your map checked after fitting? can you post up the graphs of the afr from the first runs and then from the last ones?
Andy

 

[evo arm's m7960]

so to conclude the intercooler itself is a good buy?

is it worth buying a ebay cooler? recommend?

the cooler is perfect just takes more air to fill than my turbo can make . :O)

gonna try a 3" core cooler off ebay next :O)


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[evo arm's m7960]

did you have your map checked after fitting? can you post up the graphs of the afr from the first runs and then from the last ones?
Andy

will try and get some pic's up but didnt get them save on my memory stick this time ' forgot to take it'




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[evo arm's m7960]

sorry about the pic quality . old phone :O)

hope this helps :O)


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[Steve220]

Hmm, another run in 3rd! What was your BHP ATW?? Its a nice result though! 400 in a 4 is fun

 

[evo arm's m7960]

Hmm, another run in 3rd! What was your BHP ATW?? Its a nice result though! 400 in a 4 is fun

oh yes 400 in a 4 is a lot of fun as a daily driver :O)

it was 332.6 atw with the old cooler and now 314.3 atw with the new .

am new to using rolling roads so dont know to much about how it all work but it seams quite clear that there is a issue .

its not a air leak as i pressure tested the inlet system from the turbo on to 2 bar and all was good .

as a test i also bypassed the new cooler with some steel tube and the boost was savage with out it :O) .

so its no biggie to change the cooler for a smaller one for now there cheap and easy enough to fit on a 4 ,

cheers

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[Steve220]

The cheaper intercoolers can cause an issue as they're not flow friendly. But its still a good result! What turbo's on it?

 

[evo arm's m7960]

The cheaper intercoolers can cause an issue as they're not flow friendly. But its still a good result! What turbo's on it?

ARMS-M7960


tomei turbo

pte 880cc injectors

power fc djetro

bc 272 cams

mapped by lee5 :O)


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[Steve220]

Nice little spec!!

 

[evo arm's m7960]

thanks mate and its a self built car .

no where near yours yet 600 + has got to be fun


alot of parts are used .

the turbo came from malta off ebay £400 :O) second hand bargain



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[evo arm's m7960]

just came across a couple of interesting links to do with intercoolers so thought i would pop them on here :O)




Intercooler Thermal Efficiency Calculator

Bell Intercoolers - Custom Intercooler and Core Solutions


.http://www.rbracing-rsr.com/calculations.htm


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[evo arm's m7960]

another up date

new cooler fitted this time with a 3" core :O)

300/600/76

will have to see what this one does next time i get the chance to dyno it .

cant be any worst :O) can it ... lol


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[gooner8]

hopefully not!lol When its going on the rollers? Nice tub by the way and a nice spec sheet with it!

 

[evo arm's m7960]

hopefully not!lol When its going on the rollers? Nice tub by the way and a nice spec sheet with it!

thanks :O)

dont know would like to get it back on the same rr but i dont know when i will get the time .

and as my car is out of action till my drive shafts come back from my mates i cant even road test it to feel the differance if any" only 2 days i hope " . being modded to fit later rear cv joints :O)

there is a rr near by but they all give different reading dont they ? but the graph should be simular .


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[gooner8]

its all about how it drive's at the end of the day i guess, keep us updated.