My Car on the rollers - Update 16th Feb 2010
30-09-2008, 09:38 PM
#41
PassionFord Post Whore!!
I will jump on the bandwagon and say it doesn't really matter as long as you like it. It looked like it was going well off that video you posted. 
Guess @ 417 bhp and 411 tq.
Can you post full engine spec/approx cost? From video it looks like it went really, really well without blowing well the wrong side of £10k on an all singing all dancing 500 bhp engine.
Guess @ 417 bhp and 411 tq.
Can you post full engine spec/approx cost? From video it looks like it went really, really well without blowing well the wrong side of £10k on an all singing all dancing 500 bhp engine.
it has a GT3071 turbo with a programable Ecu,
The best thing about this spec is its a common spec engine but with some nice tweaking nothing more,
It feels over 400hp but this is only a guess until it goes on the RR this week,
This isnt a secret spec and just shows that any tuner could do it.
Mark
30-09-2008, 09:51 PM
#43
The other best thing about this spec is its still standard ports on the head. Decision was made earlier this year by both Mark and myself to see how much we could get without lifting the head and spending a lot of money on porting. Next thing we may try is to fit double valve springs - not iskys as this require head off and maching - and then stick one of Mark's own profile cams on the inlet 
30-09-2008, 09:54 PM
#46
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No 350bhp at the flywheel would be excellent on a dyno-dynamics rolling road . What rolling road are you running it on and are you doing a few hard runs to let the heat build up or just a quick burst to get the highest peak reading possible ?
30-09-2008, 09:57 PM
#47
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Mark
30-09-2008, 09:57 PM
#48
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Its a standard spec engine biuld that most people have, All that is needed is valve pockets to run a basic spec BD14 inlet cam, Compression ratio could be anywhere from 7 to 8.3-1,
it has a GT3071 turbo with a programable Ecu,
The best thing about this spec is its a common spec engine but with some nice tweaking nothing more,
It feels over 400hp but this is only a guess until it goes on the RR this week,
This isnt a secret spec and just shows that any tuner could do it.
Mark
it has a GT3071 turbo with a programable Ecu,
The best thing about this spec is its a common spec engine but with some nice tweaking nothing more,
It feels over 400hp but this is only a guess until it goes on the RR this week,
This isnt a secret spec and just shows that any tuner could do it.
Mark
Looking forward to results now.
30-09-2008, 09:58 PM
#50
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30-09-2008, 10:07 PM
#53
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30-09-2008, 10:07 PM
#54
Doug,
If I had the boost pressure, I could look at the compressor map and see what airflow it was doing at this amount of pressure to get a rough estimate of the power
.
Assuming 2.2 bar, I will "guess" at 430-440bhp. If it has a big mid-range spike of 2.5 bar (as Mark seems to favour), then I will guess the peak torque at 420-430lb ft.
If I had the boost pressure, I could look at the compressor map and see what airflow it was doing at this amount of pressure to get a rough estimate of the power
.Assuming 2.2 bar, I will "guess" at 430-440bhp. If it has a big mid-range spike of 2.5 bar (as Mark seems to favour), then I will guess the peak torque at 420-430lb ft.
but mike tell me what bhp/lb i saw at 2 bar when i very first starting my own mapping
so standard engine t35.63 bd10s low comp
boost is nothing witout ignition ect , so take a guess
30-09-2008, 10:08 PM
#55
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I was being generous with 120lbft!!
I was thinking closer to 50lbft but didn't want to show anyone else up or make you feel bad and ruin your nights sleep
30-09-2008, 10:17 PM
#57
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Its a standard spec engine biuld that most people have, All that is needed is valve pockets to run a basic spec BD14 inlet cam, Compression ratio could be anywhere from 7 to 8.3-1,
it has a GT3071 turbo with a programable Ecu,
The best thing about this spec is its a common spec engine but with some nice tweaking nothing more,
It feels over 400hp but this is only a guess until it goes on the RR this week,
This isnt a secret spec and just shows that any tuner could do it.
Mark
it has a GT3071 turbo with a programable Ecu,
The best thing about this spec is its a common spec engine but with some nice tweaking nothing more,
It feels over 400hp but this is only a guess until it goes on the RR this week,
This isnt a secret spec and just shows that any tuner could do it.
Mark
was there no surge at the lower revs ?
30-09-2008, 11:35 PM
#58
That turbo at 2.2 bar will flow between 33 and 46 lbs of air and still be comfortabley on the map, so all you could tell is it would be between 350 and 480bhp, you cant tell ANYTHING else from the compressor map of that turbo with regards to how much power it will make at that boost, so stop trying to look clever by pretending you can do otherwise
30-09-2008, 11:37 PM
#59
We chucked an astra on the rollers the other day at just over a bar of boost, it was only on a very vague base map past the .8 bar it was mapped to, but we had to pay for 3 runs so figured we would use the other two for something, so I had a quick look at the AFR plot, lobbed a bit of fuel out of it at the top end, literally spent less than 2 minutes adjusting the map, whacked it back on just out of interest to see what it was at, and it was at 309bhp already, and thats a whole BAR less boost than rich is running and without the timing correct and with the fuel only in the vague ballpark, using the same turbo.
So if rich's car is only 350bhp, I think Mark needs a new profession!
Last edited by Chip; 01-10-2008 at 12:05 AM.
I will take one of these lol 
01-10-2008, 09:39 AM
#77
PassionFord Post Troll
No, you couldnt.
That turbo at 2.2 bar will flow between 33 and 46 lbs of air and still be comfortabley on the map, so all you could tell is it would be between 350 and 480bhp, you cant tell ANYTHING else from the compressor map of that turbo with regards to how much power it will make at that boost
That turbo at 2.2 bar will flow between 33 and 46 lbs of air and still be comfortabley on the map, so all you could tell is it would be between 350 and 480bhp, you cant tell ANYTHING else from the compressor map of that turbo with regards to how much power it will make at that boost
Good luck on the dyno tomorrow.
I like interesting threads like this and must thank Mark for being so transparent. Very refreshing.
01-10-2008, 09:47 AM
#79
I was laughing at your optimism, I'd already posted a "
" .Regarding Chip's comment (thanks for quoting it Doug
), he can assume Mark doesn't know what he is doing and that at 2.2 bar it will be 350bhp, and I'll assume that he does and it will be more like 440bhp.We'll see who is nearest on Thursday
?
01-10-2008, 09:47 AM
#80
I just cant see the point in him pretending he can do things that blatantly he cant.
Its amazing how many people get taken in by his pseudo technical bullshit and actually think he has a clue when he doesnt about things which are just so simple
Its like he's heard us lot talking about compressor maps, so wants to join in but doesnt actually know how to, so he just adds some random shit to try and look clever.
Its amazing how many people get taken in by his pseudo technical bullshit and actually think he has a clue when he doesnt about things which are just so simple
Its like he's heard us lot talking about compressor maps, so wants to join in but doesnt actually know how to, so he just adds some random shit to try and look clever.