corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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i dont know, it held 1.1bar on the drive home  
but at the pod sunday, couldnt get it past 0.8 bar
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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weather....
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Matt H
Member
Registered: 11th Sep 01
Location: South Yorkshire
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"how often does the boost fluctuate. could be a dodgy valve"
?
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Daimo B
Member
Registered: 20th Mar 00
User status: Offline
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Corb, you may find this interesting. Neil Adams is that Flip Painted, wide arched cossie rear winged Mk2 with a silly power LET. He's at a 13.0 but doign 115mph!!!!! This just shows what a different the inlet temp can make......
Neils car should be running a high 12 and should be crossing the line at 115mph+
I saw mike run the 13.1@105 and i was appauled at the terminal, mike and neil were talking about the time and saying how close it was to a 12 which was a good start but my reaction was that at 105mph something was BADLY wrong with the car, thats sub 350bhp in my books.
I got him to pop the bonnet and i found the inlet to be running at (going by my finger thermometer registering a temp of "ouch") about 80-90 degrees!
I proclaimed that i was confident that what was happening was:
The inlet was so hot the boosted air was thinning out due to expansion, so although it was 2.2 bar or so it wasnt actually flowing the MASS of air it was mapped for and consequently would be running rich and losing power, i also told Neil that the ECU would be forced to MASSIVELY retard the timing in order to keep it free from Det and that would be losing him power too, i said we should get some nitrous or co2 onto the intercooler to combat this.
Matt kindly lent him a bottle of nitrous, and i did the honours on the inlet and the intercooler.
I said i was confident it would be 10mph faster now, and see 75-100bhp more than previously, im pretty sure Neil was skeptical at this point.
Mike went out again in it, and i told him to try and drive it the same as last time, in order for us to see the effects of the cooling.
What this meant though was that as Mike tried to mimic how he pulled away there was SO much more power that it wheelspun quite badly.
The result though, 13.04 @ 115.76 was EXACTLY as predicted.
So all in all, a VERY minor problem, and im extremely confident if Mike had had a couple of practice's with that level of power he would have got back down into the 2.1 region for 60ft (where he was previously) so that would have translated to a saving of .25 seconds off the 60ft alone and the extra speed carried on from the 60ft point should have seen a further .1-.2 come off that too.
So on the day potentially i think with the right amount of practice and the nitrous cooling the intercooler that car should have been running the mid 12s.
[Edited on 07-06-2006 by VXR]
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corb
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Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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to sum up, get some i/c spray and hook it up to blow onto(or into?) my inlet? or invest in Aquamist? 
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AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
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i have some spare temp deisplays....
i battery, 1 wired.... i had one running in the punto showing inlet temps post intercooler 
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Daimo B
Member
Registered: 20th Mar 00
User status: Offline
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quote:
Originally posted by corb
to sum up, get some i/c spray and hook it up to blow onto(or into?) my inlet? or invest in Aquamist?
Invest in nitrous if you want the 1/4s fella.
IC spray nozzel to cool the inlet temp as it runs through the IC while standing on the start line.
But as for your power readings, thats WELL down, especially for your spec.
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AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
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hook up an IC water spray with some ethnol/methnol mixed in. Should cool down the IC a bit....
My Impreza has one, and i plumbed one into my old supra 
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fat_rew
Member
Registered: 10th Jan 06
Location: SHEFFIELD
User status: Offline
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13.9 seems perfectly resonable for 230bhp. Mine did 14.1s on sunday with 0.5bar boost creeping up to 0.7bar so mustve been around that figure.
155bhp at 7psi aint good tho mate. Let us know what you do tonight.
[Edited on 07-06-2006 by fat_rew]
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corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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just spoke to them, the readings are defiantely at the flywheel, so further investigation still needed.......
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Daimo B
Member
Registered: 20th Mar 00
User status: Offline
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Take your plugs out and check their ok and the colour? IF thats ok then the engines fine and we're back to the boost issue?
Then its a case of going over all the pipes with a toothcombe 
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AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
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if there is a boost leak the plugs will be black.... so not as simple as that daimo
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Daimo B
Member
Registered: 20th Mar 00
User status: Offline
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Ahhhhhh good point 
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Ojc
Member
Registered: 14th Nov 00
Location: Reading: Drives : Clio 197
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I reckon its the Idle control valve
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corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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Just went out and topped up my sunburn......
Plug 1
Plug 2
Plug 3
Plug 4
Anyone???
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AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
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plugs look fine....
is the acutator correctly set?
do you have any sort of boost control?
Done a compression test? (buy a tester!)
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Robin
Premium Member
Registered: 7th Jan 04
Location: Northants Drives: Clio 182 Cup
User status: Offline
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just dont trust a cheap compression tester after about 5 uses, the seals wear and they give false readings. they are good to start with though, and worth having
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AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
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they still give you an indication of lower readings accros clyinders though
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corb
Member
Registered: 24th Apr 02
Location: Calgary, Alberta, Canada
User status: Offline
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actuator is fine cos its holding the correct boost on the various settings. The boost control is done by the 5 position switch that makes up part of the phase 3 chips.
Compression test is getting done tomorrow night.
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AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
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do these chips take temp readings into account etc?!
Wouldnt it be much better to just have the fucker mapped for max boost, and run an electronic boost controller
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