MS and the Rover K series

Rich H · Post by **Rich H** » Wed Dec 06, 2006 2:02 am

Hi all, new to MS and my first post so please bear with me!

I have searched the boards, FAQs, etc and come up with little so a few questions, the car and engine in question is a Lotus Elise with an early Rover K series 1.8, mild tune and with a standard ECU (MEMS) currently. I'm researching weather MS will work with the stock sensors.

The problem comes with the Rover trigger wheel, it is set up with irregular missing teeth. the teeth are at 10 deg intervals and the missing teeth are in a pattern relative to number 1:

TDC
50 deg BTDC
180 BTDC
240 BTDC

Is there any way of getting around this? Is there an alternate option to a trigger wheel? all the other sensors are already fitted and should be fine.

Thanks

Rich

cng1 · Post by **cng1** » Wed Dec 06, 2006 4:10 am

"Rich H" wrote:

Is there any way of getting around this? Is there an alternate option to a trigger wheel? all the other sensors are already fitted and should be fine.

You either need to add material back into two of the teeth, write a
wheel decoder for that tooth pattern or fit a more "standard" trigger
wheel to your crank pulley. If you do fit a new trigger wheel take
a look at www.trigger-wheels.com

Chris

KLAS · Post by **KLAS** » Wed Dec 06, 2006 5:24 am

my old 1.4l K SPi has a reluctor ring fittet to the flywheel with 36-2 teeth. my idea is to replace the one missing tooth to have a 36-1 and rotate the ring to use it with EDIS
don't know but think that could work with the 1.8 engine too

Rich H · Post by **Rich H** » Wed Dec 06, 2006 8:47 am

Thanks gents,

Am I right in thinking that I could use the distributor with a hall probe or similar instead of a crank pos indiactor? I'm confused....

Matt Cramer · Post by **Matt Cramer** » Wed Dec 06, 2006 9:15 am

Rich H wrote:Thanks gents,

Am I right in thinking that I could use the distributor with a hall probe or similar instead of a crank pos indiactor? I'm confused....

Many Megasquirt installations use a distributor trigger instead of a crank trigger. If you lock out the timing advance mechanism (if any) and have a trigger wheel inside with four equally spaced teeth (for an inline four), it should be something you can wire in without too much trouble.

FlossUK · Post by **FlossUK** » Wed Dec 06, 2006 3:22 pm

Hi there are some really intrestings threads out there about this (i'll post tommorrow)

Re using the the 1.4 k serires ring then unfortantly it will not fit as the flywheel on the 1.8 has the teath cut in instead . the only way to do it would be to mill the whole lot out

What about after market lighted lywheels any ideas ???

Rich H · Post by **Rich H** » Thu Dec 07, 2006 12:37 am

The problem with changing the flywheel is it's a 5 hour job to take the back of the car to bits and the lightened flywheel costs a packet!

I like the idea of a dizzy based system as there is no advance mech and there is plenty of space in the cap for mods. If anyone can point me in the right direction it would be appreciated!

TVM

Rich

FlossUK · Post by **FlossUK** » Mon Dec 11, 2006 4:23 pm

Sorry about the delay however the link for k series wheel decoder prblem is

viewtopic.php?t=13502

doesn't make sense to me yet but if one of you understands and more importantly now how to use this info then I'd love to now

Rich: hows the Dizzy solotion looking ? do you need any more info/diagrams for the lotus ?

Rich H · Post by **Rich H** » Tue Dec 12, 2006 12:13 am

Ground to a halt TBH mate! Not had time to delve into it. Looks possible with some mods to the dizzy, needs some time and expert knowledge thrown at it!

Rich H · Post by **Rich H** » Tue Dec 12, 2006 12:17 am

Thanks for the heads up on the other thread. Interesting to note that the guy doing the PIC programming has now fitted a 36-1 tothed wheel and a ford sensor....