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Crankposition sensor!?!?!


Cypha
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Ok so I have a sport 100bhp engine married up to a 1.4 75hp box.

It had been converted to bike carbs but never been fired up yet, but here's the question.

The bike kit wants a VR sensor but it appears I have a hall sensor which I can work around with resistors.

My only concern is I left the standard sport flywheel on the engine before I mated the box and now I am thinking that the sensor might be too far away from the flywheel as the 75hp and 100hp might be different diameters. Can't tell as google searches returned nothing in terms of flywheel diameters and I can't measure the flywheel since it is in the car.

Does anyone know if the 1.4 75hp gearbox can be mounted to the sports engine WITHOUT changing the flywheel?

I.E will the teeth and diameter configuration match up to get sensed by the 75hp crank sensor.

Hope that makes sense.

Any help would be appreciated as I really do not want to take the engine out again just to measure the flywheel!

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1 hour ago, Sausage said:

This any use?:

 

lupo flywheel.jpg

Wow, where did you get this info from? 

Either ways, it would appear from this document that the same VW part number is used for 1.4 75hp and 100hp. The only variation code is for the AUY engine which is the GTI.

Let me check something....

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Right thanks to sausage and leading me to a VW part number, i can confirm that ALL 1.0 -> 1.4 models (Inc sport, non-sport and the rare FSI model) all used the same flywheel. The only difference is the GTI which I can only assume has a slightly larger diameter flywheel for more clutch plate surface area.

It is also known as VW 032105270.

Sausage you a star and hope this might help someone in the future.

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Are you going to use the standard ecu to run the ignition? You may run into knocking problems if the carbs lean out a bit... as the ignition systen is linked directly with the injector program. Get an ignition module that you can manually program... easy way out :)

Ah, just had a thought, you may want to use the ecu to control the idle fuel shut off, so when you're on over-run, you don't get backfiring.

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32 minutes ago, mk2 said:

Are you going to use the standard ecu to run the ignition? You may run into knocking problems if the carbs lean out a bit... as the ignition systen is linked directly with the injector program. Get an ignition module that you can manually program... easy way out :)

Ah, just had a thought, you may want to use the ecu to control the idle fuel shut off, so when you're on over-run, you don't get backfiring.

It does use a standalone programmeable ignition system. The VW ECU and all the loom has gone. I had to rewire the car from the ground up. It was a total faf but totally worth it.

Back fires can be fun...come on! Bramm bramm brammmmmm bang bang bang. Wicked.

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26 minutes ago, Sausage said:

What system are you using for the ignition? 

Motorsport nodiz pro V3 

Full 3d system mapping with Bluetooth, laptop tuning and launch control!

https://motorsport-electronics.co.uk/products/ignition-only-systems/nodiz-pro/

 

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Your plenum tubes are really short, like 120mm from the pic. So my guess is that you're looking for power at really high revs (5000+)? You'll want to mess with cams (timing duration) for sure, or you'll not get much gain below 4000. But it'll be excellent fun when you cane it!

You'll want to monitor the downstream mix temps too as you have no air ducting (to prevent icing up and carb overheating).

nice shiny gearbox. Change the cam belts. & Copper exhaust nuts.

i've never tuned one of those lumps. I'll be watching this thread closely :)

 

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39 minutes ago, mk2 said:

Your plenum tubes are really short, like 120mm from the pic. So my guess is that you're looking for power at really high revs (5000+)? You'll want to mess with cams (timing duration) for sure, or you'll not get much gain below 4000. But it'll be excellent fun when you cane it!

You'll want to monitor the downstream mix temps too as you have no air ducting (to prevent icing up and carb overheating).

nice shiny gearbox. Change the cam belts. & Copper exhaust nuts.

i've never tuned one of those lumps. I'll be watching this thread closely :)

 

You haven't seen the half of it. It's been a year of working most weekends and lots of fabricating.

Fingers crossed the eBay engine #2 (don't ask about the first one it still brings a year - broke a head stud putting it back together after a full strip down ☹️)

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4 hours ago, Sausage said:

Nice, but i assume all this effort is to meet some regs? 

Yes a road legal car that has a MOT.

I cannot be arsed to low load it to the track each time.

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1 hour ago, Sausage said:

Wow, that's some commitment to the 1400.

What power are you hoping for? 

Should Dyno around 130, but it has been on a serious diet. I weighed it before at about 695kg. I haven't weighed it yet but I reckon I have lost over 150kgs!

No original interior at all. All window mechs removed. Polycarbonate windows all round. Stainless tank. Buckets with harnesses.

I mean the original seats weighed in at 27kgs each! My new ones are 8kgs.

The seatbelt mechs were 9kgs each!

Plus I removed all the wiring. Check the before and after pictures.

The loom and what I threw away!

To be honest I am so far in the hole regarding costs it is cheap to keep spending till it is finished. I lost count after the first 5k. 😂

That said a vast amount went on kitting out my garage with air compressors/welders and tool chests.

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Edited by Cypha
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5 hours ago, Sausage said:

You could have got a nice rwd Sylva Striker or Fury as a track day weapon for that sort of money.

Your so right, but you know what it's like you spend and bit. Then a bit more. Then you stop telling the wife and hiding the boxes from eBay.

Before I knew it I was so in the hole to give up and sell it as a unfinished project was a complete waste, might as well keep spending to get it finished. I would do it differently if I had to do it again. I made a lot of costly mistakes so it was a learning curve and you can't put a price on experience.

What cars are you using as a daily or for the track?

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7 hours ago, LR5V said:

Good work - I still see sound deadening in the pics, there is a good few Kg's you can loose there, need to do the same on mine

No all gone now. It is a hollow metal box with wheels. Once I get a chance i will get it to a weighbridge and get the final weight. I know it seriously lighter as when I refitted the engine, the stance look I had at the front was replaced by it looking like a 4x4!

 

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12 minutes ago, Cypha said:

Your so right, but you know what it's like you spend and bit. Then a bit more. Then you stop telling the wife and hiding the boxes from eBay.

Before I knew it I was so in the hole to give up and sell it as a unfinished project was a complete waste, might as well keep spending to get it finished. I would do it differently if I had to do it again. I made a lot of costly mistakes so it was a learning curve and you can't put a price on experience.

I just dont tell about the big stuff, if mine knew how much I spent on my LSD and gearbox refresh she would go completely nuts!

Wife gets frustrated with the number of packages i get for the Lupo. The other day I got some standard rear Pagid flexi hoses (just for emergency use till I run the lines in the cabin) only a tenner from ECP, so if I had been challenged I would have got away with that  -lucky most of the standard stuff is cheap, awful shame the fun stuff is in a different league price wise.

I appreciate you have yet to get your Lupo running, interested in the ignition management you have, have you looked at the ME software?

I ask as ME211 management is one of the ones I am thinking of when I go to bodies -But I keep flipping to Omex and now Megasquirt is also distracting me aswell!

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18 minutes ago, LR5V said:

I just dont tell about the big stuff, if mine knew how much I spent on my LSD and gearbox refresh she would go completely nuts!

Wife gets frustrated with the number of packages i get for the Lupo. The other day I got some standard rear Pagid flexi hoses (just for emergency use till I run the lines in the cabin) only a tenner from ECP, so if I had been challenged I would have got away with that  -lucky most of the standard stuff is cheap, awful shame the fun stuff is in a different league price wise.

I appreciate you have yet to get your Lupo running, interested in the ignition management you have, have you looked at the ME software?

I ask as ME211 management is one of the ones I am thinking of when I go to bodies -But I keep flipping to Omex and now Megasquirt is also distracting me aswell!

Welcome to car spender anonymous! 😂

Everyone welcome....!

I will get you some details on the ME unit, but it was quite easy to fit but I did think the 'helpline' wasn't very helpful.

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52 minutes ago, LR5V said:

thanks - I think most of their stuff is online, was more interested in how logical the SW is. Help line comment is noted, bet they are a Ford guy!

Yes escort st's and rs's.

Once I get the 3d tuning map up on my laptop I will get some screenshots for you. Also did I mention that the unit had built in Bluetooth for their custom dashboard app...saved me installing a rev counter which is a nice save.

Edited by Cypha
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