Dyno disappointments
#1
15000
Thread Starter
Join Date: Apr 2010
Location: Yorkshire
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
Dyno disappointments
Hi There,
Just come from the dyno expecting 500 BHP but unfortunately i was a little disapointed, does anyone have any ideas as to why we aren't making any more real power after 4750 rpm??
Cheers Matt
Just come from the dyno expecting 500 BHP but unfortunately i was a little disapointed, does anyone have any ideas as to why we aren't making any more real power after 4750 rpm??
Cheers Matt
#5
15000
Thread Starter
Join Date: Apr 2010
Location: Yorkshire
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
hi,
bit of background....
GT30- 2WD MANIFOLD
SIEMENS 850 INJECTORS
RS500 INTERCOOLER
EMERALD K6 MAPPED BY YOURS TRULY
4WD INDUCTION MANIFOLD WITH 10 MM SPACER
8TO 1 CR
3" MONGOOSE EXHAUST
dyno was just used for power run therefore no input from opperator
cheers
matt
bit of background....
GT30- 2WD MANIFOLD
SIEMENS 850 INJECTORS
RS500 INTERCOOLER
EMERALD K6 MAPPED BY YOURS TRULY
4WD INDUCTION MANIFOLD WITH 10 MM SPACER
8TO 1 CR
3" MONGOOSE EXHAUST
dyno was just used for power run therefore no input from opperator
cheers
matt
#6
Turbocharging Technician
Join Date: Jul 2010
Location: Top secret. Mission:Imposible.
Posts: 3,557
Likes: 0
Received 0 Likes
on
0 Posts
sounds like the car is well up to the job mate!, not the fuel pump or filter that is causing it the lean off is it? what is the duty cycle on the injectors at 5k on full boost? good on ya for mapping it yourself at that power level
Trending Topics
#9
Turbocharging Technician
Join Date: Jul 2010
Location: Top secret. Mission:Imposible.
Posts: 3,557
Likes: 0
Received 0 Likes
on
0 Posts
you can see where it blips rich and lean (in the first graph) the power mimics it exactly, either going up or down. But as it gets richer and richer past 5k, the power is tailing off quicker than i would expect it to. Def needs a touch more fuel as it comes on boost and at peak torque, but im sure you will have the laptop out later
Last edited by chaffe; 01-10-2010 at 11:58 AM.
#11
PassionFords Creator
iTrader: (12)
hi,
bit of background....
GT30- 2WD MANIFOLD
SIEMENS 850 INJECTORS
RS500 INTERCOOLER
EMERALD K6 MAPPED BY YOURS TRULY
4WD INDUCTION MANIFOLD WITH 10 MM SPACER
8TO 1 CR
3" MONGOOSE EXHAUST
dyno was just used for power run therefore no input from opperator
cheers
matt
bit of background....
GT30- 2WD MANIFOLD
SIEMENS 850 INJECTORS
RS500 INTERCOOLER
EMERALD K6 MAPPED BY YOURS TRULY
4WD INDUCTION MANIFOLD WITH 10 MM SPACER
8TO 1 CR
3" MONGOOSE EXHAUST
dyno was just used for power run therefore no input from opperator
cheers
matt
Looks to me like it runs short of spark lead and runs too rich, but thats a guess at a piece of paper without knowing engine specifics or IAC temps during the run.
Is the turbo big enough for your expectations?
Last edited by Stu @ M Developments; 01-10-2010 at 12:51 PM.
#12
15000
Thread Starter
Join Date: Apr 2010
Location: Yorkshire
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
what does spark lead mean?advance?
what i find suprising is the power map looks quite good to 5000 rpm and then it hits
the "wall",i was expecting the bhp to climb with a similar curve-to 7000 rpm???both maps show to me a similar trace-what is the correlation??
thanks for the comments so far...
matt
what i find suprising is the power map looks quite good to 5000 rpm and then it hits
the "wall",i was expecting the bhp to climb with a similar curve-to 7000 rpm???both maps show to me a similar trace-what is the correlation??
thanks for the comments so far...
matt
#15
15000
Thread Starter
Join Date: Apr 2010
Location: Yorkshire
Posts: 19
Likes: 0
Received 0 Likes
on
0 Posts
the cams are standard cosworth with 8.5 mm of lift
regards porting- stage 1-polished,blended etc.standard valves and seats
I will look at the ignition map and post details later...
cheers
regards porting- stage 1-polished,blended etc.standard valves and seats
I will look at the ignition map and post details later...
cheers
#16
Surely it would just save hassle and a potential huge amount of money long term to pay someone to map it, mapping is a huge amount less than a rebuild, Ł280 at Emerald for instance, but peace of mind, and an even better drive back after mapping!!
Had my injectors cleaned there yesterday 1 had a odd spray pattern just like a steam instead of a nice fan, ok last year seems they don't take to a bit of inactivity too well.
tabetha
Had my injectors cleaned there yesterday 1 had a odd spray pattern just like a steam instead of a nice fan, ok last year seems they don't take to a bit of inactivity too well.
tabetha
#17
PassionFord Post Whore!!
That should be power at the hubs so I dont think the powers that bad, You wont get much more with your head and cam spec,
I would take a look at your mapping skills with a afr graph like that.
Mark
Thread
Thread Starter
Forum
Replies
Last Post
bigluke200
Ford RS Cosworth Parts for Sale
14
02-09-2015 10:35 PM
yawiejon
General Car Related Discussion.
15
09-08-2015 06:36 PM