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Sierra Track Car Dyno'd - video added
Posted: Sun Apr 15, 2007 7:48 pm
by pablo
Would like to start by saying Thank you for all your words of support and advice with our problem solving. Thank you
Took the car to be dyno'd today with our other club...She survived
Down to buisness finally we have a power graph, and video and to follow
Run was stopped at 4900rpm due to the car starting to pink, caused by fueling lean at the top end, this will be sorted next week :-D
Here are some pics of the track car, Al's XR4i and sierra Gt
Posted: Mon Apr 16, 2007 9:19 pm
by pablo
Posted: Mon May 28, 2007 12:41 pm
by pablo
Latest dyno graph, the bhp figure is the same but the torque has increased sligthly.
The main difference is that the power comes in a lot earlier.
Posted: Mon May 28, 2007 4:44 pm
by duncan
I notice that it still only run to 5000 rpm - is it still pinking?
Posted: Mon May 28, 2007 4:54 pm
by Stuart
Nice figures Pablo :thumb:
Most of the fun and been and gone by then on these old tanks so I normally short shift when on a track anyway and rely on the torque.
Al's GT looks mint. That photo must have been touched up with photoshop
Posted: Mon May 28, 2007 5:03 pm
by pablo
It was but now revs to 5800. The problem was a weak spark, too large a gap setting on the plugs.
Part of our problem has also been the excessive heat from the turbo causing unseen damage to the plug leads, plus our current set up of fueling though the seventh injector was over-fueling the right bank of cylinders. This is why we are now pushing to get the MF2 installed. This will give us much more control over the on boost fuelling and better distribution of the fuel into the cylinders.
Posted: Mon May 28, 2007 5:04 pm
by duncan
Can you get a turbo jacket to heat proof the turbo?
Posted: Mon May 28, 2007 5:21 pm
by pablo
We've just fitted another heat shield between the turbo and plug leads, plus we're going to double sleeve the plug leads on that side of the engine. Have also bought some Magnecor 8.5mm leads and ngk platinum plugs to cope with the heat.
Posted: Mon May 28, 2007 5:35 pm
by pablo
dynamix wrote:Can you get a turbo jacket to heat proof the turbo?
I have looked into this but have heard comflicting reports on the benefits of turbo jackets. So more research will have to be done before a decision is made.
Posted: Mon May 28, 2007 6:40 pm
by Bladerider
Nice one,
In one of those photos you can clearly see a chap holding a tin of Ambrosia ready to see if you can pull the skin off it !!!!
OK - I'll go now !!!
lol
J.
