DTRC Brands Hatch April 2006 - Page 3

Alan Cherry · 8 Apr 2006, 13:02 (Ref:1573887)

44 entries could be 43 soon !
Anyone got any useful suggestions - Astra won't go. has MBE management system (967EF) all checked out perfect by MBE last week. Has brand new loom from GWR Motorsport in Swindon picked up yesterday and I watched the man bench test it before I picked it up - perfect.
I'm not getting any spark - when you plug a laptop in all sensors are giving sensible readings, but says 0 rpm when cranked, hence no spark.
Have two crank sensors that are giving correct readings, and if you flash a screwdriver across end of sensor, lo and behold, you get readings of revs on the laptop. the sensor is driven by a toothed ring with some teeth missing inside the block. have checked this, it's not loose, it's turning ( part of crank ) and there is about a 2mm air gap to end of sensors.
Getting close to the gallon of petrol and box of matches stage - any constructive suggestions would be welcome

graham bahr · 8 Apr 2006, 13:09 (Ref:1573898)

alan, ok you have a zero rpm reading on cranking, what about the other sensor readings have you still got them, if it might be the ecu isn't seeing a live feed on cranking, ingnition switch problem maybe?

Alan Cherry · 8 Apr 2006, 13:16 (Ref:1573909)

Quote:

Originally Posted by graham bahr

alan, ok you have a zero rpm reading on cranking, what about the other sensor readings have you still got them, if it might be the ecu isn't seeing a live feed on cranking, ingnition switch problem maybe?

Graham, I've sent you a pm, but all the other sensor information seems to remain ok e.g doesn't drop back to default values.

grichie87 · 8 Apr 2006, 13:29 (Ref:1573917)

Quote:

Originally Posted by Alan Cherry

Graham, I've sent you a pm, but all the other sensor information seems to remain ok e.g doesn't drop back to default values.

MBE Systems, The Elliott Centre Love Lane Ind. Est., Cirencester, GL7 1YS, England
Tel General: +44 1285 883030 Fax: +44 1285 883020
info@mbesystems.com www.mbesystems.com

4 Cylinder Tacho Signal (Open Collector with 12v Pullup)

Tacho Signal can source about 14mA
IMPORTANT NOTE
In some instances we have seen tachos such as VDO, although supposed to run on this signal, appear to drag the output voltage of the tacho signal down to approx. 3 volts. On some occasions this has been overcome by fitting a 390 ohm (1 watt) resistor across the tacho signal wire on the tacho and its 12V supply wire.

grichie87 · 8 Apr 2006, 13:35 (Ref:1573921)

Quote:

Originally Posted by Alan Cherry

Graham, I've sent you a pm, but all the other sensor information seems to remain ok e.g doesn't drop back to default values.

Hi Alan,
check the flywheel/crank if you have changed any of the parts it maybe a missmatch. Steve Broughton at SBD motorsport is magic on MBE stuff.

graham

Alan Cherry · 8 Apr 2006, 13:35 (Ref:1573923)

Quote:

Originally Posted by graham bahr

alan, ok you have a zero rpm reading on cranking, what about the other sensor readings have you still got them, if it might be the ecu isn't seeing a live feed on cranking, ingnition switch problem maybe?

Graham, I think I love you and want to have your babies - Dodgy ign feed . not permanently fixed yet, but at least i've found it. You'll have no trouble lapping me at Brands now - I'll even go on the grass to let you by !

Alan Cherry · 8 Apr 2006, 13:39 (Ref:1573925)

Quote:

Originally Posted by grichie87

MBE Systems, The Elliott Centre Love Lane Ind. Est., Cirencester, GL7 1YS, England
Tel General: +44 1285 883030 Fax: +44 1285 883020
info@mbesystems.com www.mbesystems.com

4 Cylinder Tacho Signal (Open Collector with 12v Pullup)

Tacho Signal can source about 14mA
IMPORTANT NOTE
In some instances we have seen tachos such as VDO, although supposed to run on this signal, appear to drag the output voltage of the tacho signal down to approx. 3 volts. On some occasions this has been overcome by fitting a 390 ohm (1 watt) resistor across the tacho signal wire on the tacho and its 12V supply wire.

Graham, I'm running a STACK, but thanks for the info - mind you ifit got desparate I'd run without the rev counter - I've got a hard and soft limiter plus shift light. bugger I've forgotten what colour dot I am !

Al Weyman · 8 Apr 2006, 15:16 (Ref:1573972)

Glad you got it sorted Alan as I was just about to offer to lend you a nice dual point Mallory distributer (whats all this ECU and laptop millarkly

).

Al Weyman · 8 Apr 2006, 15:57 (Ref:1573991)

Oh the other beast (Yellow car) still lives as well. I thought it had lunched a head gasket when it threw a belt at Snetterton but all it has done is split the rocker gaskets causing oil to go all over the headers and the water from the exhausts must have been condensaton cause it ain't doing it now, the system is not over pressurising and I left it ticking over for half an hour and it still never over heated, no evidence of oil in water or water in oil so fingers crossed she's OK for now.

graham bahr · 8 Apr 2006, 19:39 (Ref:1574079)

Quote:

Originally Posted by Alan Cherry

Graham, I think I love you and want to have your babies - Dodgy ign feed . not permanently fixed yet, but at least i've found it. You'll have no trouble lapping me at Brands now - I'll even go on the grass to let you by !

not worries Alan

, glad to help, and after being awarded "hero of the year " last year for mending everyones cars ( thanks to the organisers behind it) i thought i'd better live up to it

Al Weyman · 8 Apr 2006, 20:13 (Ref:1574105)

Well with me and Rob out there Graham you had better brush up on yer V8's. :-)

R59 · 8 Apr 2006, 22:03 (Ref:1574178)

Glad to hear that the yellow peril is OK.

One thing that worries me about Saturday (I've actually been reading the Final Instructions!!)

OK, I keep relatively fit, but no engines before 0815, and our scrutineering is 0735. And someone was kind enough to put the scrutineering bay half way up the hill - it's about time Mr Palmer moved it to near Hailwoods, or similar. I can hardly expect my wife and 13month old son to help push my beast up there!

Who's feeling strong? (torque biasing diff's are fun to push around the paddock!)

Rob.

Al Weyman · 9 Apr 2006, 07:05 (Ref:1574306)

Well sorry I will be driving mine it is simply too heavy to push or they will have to do what they did at Snetterton last week and come out to us, they may well do that under the circumstances.

Eddy V · 9 Apr 2006, 08:56 (Ref:1574365)

Who mentioned pushing cars?
I'm not there in that case. Gone to get some beer.

R59 · 9 Apr 2006, 09:09 (Ref:1574373)

Top man!

andypipe · 9 Apr 2006, 12:05 (Ref:1574508)

Ive got a tow rope and pick up truck if thsts any help. Thats how im gonna do mine

Al Weyman · 9 Apr 2006, 12:12 (Ref:1574515)

Good idea Andy, i'll pack a rope as well. Would they scrutineer it on the trailer I wonder, it is a flat bed so everything is accessable and all the doors can be opened.

graham bahr · 9 Apr 2006, 16:30 (Ref:1574642)

Quote:

Originally Posted by Al Weyman

Good idea Andy, i'll pack a rope as well. Would they scrutineer it on the trailer I wonder, it is a flat bed so everything is accessable and all the doors can be opened.

i once saw a scruitineer log book a sprint car on a trailer so why not?

R59 · 9 Apr 2006, 18:22 (Ref:1574708)

One problemo. My motorhome won't go through scrutineering with the trailer on the back.

I think the scrutineers should come to us, since we cannot drive to them, due to the rules laid down by the circuit/officials of the meeting.

If we were "big boys" and hidden away in the garages, they'd come over to see us there.

Rod - you have the ear of those in ivory towers, any chance of having a word?

Rob.

Flat Out Farr · 10 Apr 2006, 08:10 (Ref:1575265)

The scrutineers have been known to do that! At Gurston, they come round to see you; I have experienced that at Silverstone, in the past, @ a BARC-SE meeting! Top marks to them. Their job can be "between a rock and a hard place", but it is only those who can't prepare their car correctly that moan.

Al Weyman · 10 Apr 2006, 08:49 (Ref:1575301)

I agree. They came around to us at Snetterton the other week in the Classic Touring Car round.

And when I had Rob's Torrey Canyon problem (watering the track with oil and water) and had to be rescrutineered they came out of their way to find me in the pits to re-scrutineer the car but unfortunately I could not fix it, top marks. I find most (all) of the guys very fair and its not an MoT test after all with someone trying to fail you to make a few quid, it is mainly all about our safety.

ss_collins · 10 Apr 2006, 15:40 (Ref:1577725)

Its nice when the scrute come and visit us in the garage - not so nice sometimes when they get there early and have done half your car when you get to the circuit... (then have to go to sign on in bottom paddock)

Rod Birley · 10 Apr 2006, 17:22 (Ref:1577814)

I called in to see the BRSCC today and Vicki did ask the chief scrutineer. However, he is struggling to get enough scrutineers so unfortunately we do have to go to the bay. Engines may be started but not revved i.e. tickover to move around slowly (if that helps) or a tow rope behind another vehicle. I did try!

R59 · 10 Apr 2006, 19:01 (Ref:1577898)

Thanks Rod.

Now tickover - that's going to be interesting. Slippy clutch - stall - restart (blip), slippy clutch - stall - restart (blip)......

Rob.

Alan Cherry · 10 Apr 2006, 20:14 (Ref:1577959)

Quote:

Originally Posted by Rod Birley

I called in to see the BRSCC today and Vicki did ask the chief scrutineer. However, he is struggling to get enough scrutineers so unfortunately we do have to go to the bay. Engines may be started but not revved i.e. tickover to move around slowly (if that helps) or a tow rope behind another vehicle. I did try!

AGHHHHHHH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! I just wish mine would start or tickover - any chance of a tow rope to the back of yours during the race Rod ! I've run out of ideas on mine - injectors squirt nicely, plugs spark, but now nothing ! Ive had the ECM tested by the manufacturers, and a brand new loom made. Even the guy Andy Pipe suggested never called back - If he could have helped, I would have got him to remap the bugger.
I'll be there to watch though - and support my cousin in my old Fiesta

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