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Author: Subject:  Jezebel's next evolution - Haltech EFI [dyno chart up 5/10]
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posted on March 27th, 2011 at 01:28 PM



oooh daaavve....
you know that thing of yours in my garage??

http://www.thesamba.com/vw/classifieds/detail.php?id=1076832 
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i think it needs those ^^^
it will still look period correct on the outside :D
tax time is coming, what better way to blow some $$ :P




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posted on March 27th, 2011 at 08:42 PM



:lol:



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posted on March 29th, 2011 at 08:40 PM



Can any one tell me how they adjust the camber on the mendeola rear set-up?

Toe is obvious, but cant pick the camber adjuster?




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posted on April 24th, 2011 at 11:16 PM



Any updates Dave ?
Is the injection all sorted now ?
Have you run any events lately ?

C'mon you've been quiet !!!




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posted on April 25th, 2011 at 11:40 AM



Yeah - have been a bit slack on things hey... just gotten so damn busy this year, and with work stuff O/S things have just been nuts !!!

:blush:

Anyway, have run 2 hillclimbs this year but been having a few issues the injection.

Main symptom has been that she breaks down and misfires up in the rev range under full load. Hasn't looked fuel related as the AF looks fine right up until the misfires.

With a bit of digging around and a few different people involved it looks to be that the triggering gets erratic at higher RPM, and last event made a few changes on the sensor alignment which moved where in the RPM range the problem started, so looks like on the right track.

With some help from DB have come up with a different setup for the sensing on the end pulley to get it more stable/reliable.

Now that back home hope to get it in and sorted this week.... will post an update and pics when I have.




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posted on April 25th, 2011 at 01:29 PM



you got VERY high quality ignition leads Dave.....these can cause big issues with aircooled EFI
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posted on April 25th, 2011 at 02:54 PM



Don't think it's the leads Daimo... they're decent quality Bosch ones that I'm running.

If the different triggering setup doesn't solve it tho, leads might be the next suspect...




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thumbup.gif posted on April 25th, 2011 at 03:49 PM
Megasquirt. I never seen these, thanks for mentioning them.


http://www.boostengineering.net/ 



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posted on April 26th, 2011 at 08:47 AM



Quote:
Originally posted by hellbugged
you got VERY high quality ignition leads Dave.....these can cause big issues with aircooled EFI


I,ve got a set of 8mm MSD leads you can try if need be Dave.

Cheers Col
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posted on April 26th, 2011 at 09:25 AM



Quote:
Originally posted by ian.mezz
http://www.boostengineering.net/ 



Your kidding

I guess it is pretty quiet in Maitland:crazy:
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posted on April 26th, 2011 at 07:25 PM



Quote:
Originally posted by Brian
Quote:
Originally posted by ian.mezz
http://www.boostengineering.net/ 



Your kidding

I guess it is pretty quiet in Maitland:crazy:


yeah I am old skool we still use points and we havent had to change them in years:lol:
http://www.youtube.com/watch?v=INIX6msMCqc&feature=related 




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posted on April 30th, 2011 at 02:54 PM
Crank trigger setup - take 2


Pfft... c'mon Ian.... where's the challenge in that ?!?!

Anyway, have now got my new trigger setup fitted... a 12 tooth Motech wheel, spaced out from the dry sump pulley with a GT101 sensor looking directly down onto it.

The pulley spacer and mounting the trigger wheel up is courtesy of dangerous, and uses a Type 3 pulley bolt and Berg washers, plus 5 M6 HT allen bolts to prevent any movement.

http://wy6t5w.sn2.livefilestore.com/y1p1fdsZXiEmP0JLTIC5XImCB4FmXDcqZ_OVu458mWLkggcpGlqMPqhkcwGPjR7FuIc8zb-2J0yUDiMUKcB9u4IqTM2PvJi7tQE/IMG_0028
.JPG

The sensor mount is my own crazy creation... 24mm thick bit of ally I milled down, mounted using the fuel pump bolts. A bit unconventional perhaps, but it's VERY stable and has PERFECT alignment and clearance of the sensor to the teeth.

http://wy6t5w.sn2.livefilestore.com/y1pHLZqb1ZztLXlDbqan3O62rnYiGz8_0KuypM4C19TanXXKO9BI-rrp5EweF7VTo2c2pfShz6HzDxShfWZydctA7oCQum5-RZl/IMG_0027
.JPG


Haven't driven her yet, but even just revving in the garage there's a noticeable difference...now starts almost instantly, iignition timing looks rock solid, and she sounds VERY angry up in the revs.




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posted on April 30th, 2011 at 02:58 PM



cool, hope its all sorted now.

I guess you wont be driving it on the street for any distance with that size pulley !

I was going to say just ring Ben Durie as he has the latest haltech on his and heaths car.....maybe he could have helped with the problem?




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posted on April 30th, 2011 at 03:22 PM



Pulley is actually 6 inch, but nah - she doesn't see much street driving these days.

Considered talking to Ben, but really the process of working through stuff is all part of the enjoyment for me.

:tu:




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posted on April 30th, 2011 at 03:46 PM



could you do a supersprint like Wakefield with that size pulley or not really ?



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posted on April 30th, 2011 at 08:34 PM



I did last year without any probs.... but then being dry sump I have a lot of oil and a decent cooler up front.



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posted on April 30th, 2011 at 08:37 PM



yeah but what about head temps or is the DTM that much better to keep them cool ?



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posted on April 30th, 2011 at 09:02 PM



Yeah, head temps were all fine.

The DTM is definitely better than the stock shroud, but I didn't have head temp gauges with the stock setup so can't give a definite figure on how much better.




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posted on May 1st, 2011 at 09:49 PM



Sides, had a problem with the Cook open wheeler that had similar characteristics to what you are describing. Turned out to be a faulty crank angle sensor. We run the same sensor for our road speed sensor, so just swapped it over.

Craig, Ben’s car has the latest Platnum computer the same as Sides, Garfield is still running on the 5yr old E8........at this stage can't see any point in updating.

Heath
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posted on May 30th, 2011 at 09:37 AM



Dave just put a Motec on it and be done with it
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posted on July 7th, 2011 at 10:54 PM



i made it even easier.just put a 200sx dizzy on mine.



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posted on March 20th, 2012 at 09:22 PM



Any updates dave ?



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posted on March 21st, 2012 at 01:43 PM



I believe it went on a diet.....



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posted on March 21st, 2012 at 09:48 PM



Interesting, how much did it weight and how much does it weight now??
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posted on March 30th, 2012 at 05:20 PM



Yeah, I've kinda let this thread lapse a bit hey....

:blush:

Update from the tail end of last season is that all my problems turned out to be caused by an ECU fault... there was some problem with the signal ground circuit which meant that when the alternator was charging the pulse width of the injectors could go haywire. Unsure if it's something that just happened or if related to the original alternator I had that failed. And of course being related to a spinning alternator higher revs made the problem worse.

Weirdly it didn't show up as signal noise in the triggers or anything like that which made it harder to figure out, but once FINALLY identified the ECU was repaired under warranty, bolted back in the car and all good and back to my normal pace for the last couple of events.

Since then the engine has had an off season check over, and although all looked good just couldn't resist the urge to play... so in went some notched Wiseco's and slightly longer rods... allowing for the cam to be advanced a bit without sacrificing compression or clearance.

Also a bit of outside-the-engine tinkering - adding an idle control circuit, experimenting with closed loop during warm up etc. etc. to try and just to make her a little easier to live with.

Oh plus one of Classic's Sidewinder systems to replace the cruddy old fat boy I had... it's REALLY SHINEY now CT !!!

:lol:




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posted on March 30th, 2012 at 05:36 PM



Re the diet - well my numbers at Warwick were consistent (ish) but didn't add up, so dangerous convinced me to get Jezzi weighed once and for all.

And wouldn't you know it - she's a bit of a porker !!!

As raced with about 1/4 tank of fuel, no driver and passenger seat removed... 880kg on the dot... so at Warwick with me and the passenger seat in she would've nudged and possibly tipped the 1000kg mark !!!

Since then without putting in speed holes or doing anything dodgy... just removing unecessary things like ash trays, lighter weight year model bits etc... the simple "weigh what comes off, weigh what goes on" with my digital fishing scale says have saved just on 20kg, with about another 6kg more I can still do.

And no - there's no titanium nuts involved - I haven't won Lotto !!!

:ninja:

End result... first event out she felt A LOT sharper in the handling, times more consistent than ever. Even on a massively hot day, tyres past their prime, all the usual driver excuses etc. I managed to improve my record by 0.25s... so time and effort well spent I think !!!

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posted on March 30th, 2012 at 07:22 PM



Its going to scare me when I find out what the super weighs...... and it hasn't even got a cage yet!

I think i better loose 25kg's will be easier than taking 25kgs of of the car. To much expat living in SE Asia.....




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posted on March 30th, 2012 at 09:40 PM



Thanks for the update Dave :tu:

Its amazing how the weight can add up with the various additions.......I remember weighing my hillclimb car (832kg) and wondered where all the weight was ! Rollcages, swaybars, braces etc all add weight :fakesniff:

I reckon the ragtop is close to 1000kg's........the rear subwoofer box weighs in at 43kg alone !!!!!




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posted on March 30th, 2012 at 09:53 PM



Quote:
Originally posted by Craig Torrens
Thanks for the update Dave :tu:

Its amazing how the weight can add up with the various additions.......I remember weighing my hillclimb car (832kg) and wondered where all the weight was ! Rollcages, swaybars, braces etc all add weight :fakesniff:

I reckon the ragtop is close to 1000kg's........the rear subwoofer box weighs in at 43kg alone !!!!!


Forgot the ego that it drags around dude...




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posted on March 31st, 2012 at 08:35 AM



Quote:
Originally posted by BiX
Its going to scare me when I find out what the super weighs...... and it hasn't even got a cage yet!

I think i better loose 25kg's will be easier than taking 25kgs of of the car. To much expat living in SE Asia.....


Heh heh, yeah - all my work travel lately hasn't helped in that regard either !!!

:lol:

My plan is to do both... saving 40kg is better than saving 20kg.

Based on just the length of main members, the cage I've calc'd is around 70-80kg... so no chance of getting anywhere near Heath & Christine's 800kg or Col's 803kg with their alloy cages !!!




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