On behalf of Mr C;

Gone to change cam pulleys, lined up cam pulleys and crank so they are timed, gone to check dizzy timing and found it to be out equivalent to one tooth on pulley.

Running msd coil pack conversion so dizzy is redundant to spark, but i believe still retains a timing input of sorts for the timing. I have noticed on idle the power sometimes struggles to keep a a smooth idle i put this down to modified std ISCV or MSD-ALS!?

Could this timing on dizzy cause the rough idle and should it be set up one tooth out, should this be changed to ensure all lined up? It has only been driven down the road briefly so no back to back tests.

Should everything be timed up straight? and how should it feel if one tooth out?




(PICS: When dizzy is lined up cams are one tooth out as shown. When cams lined up dizzy is out)

Thanks in advance
Andy

 

how are you timing the aux shaft and bottom pulley?

 

replied on the other thread, https://passionford.com/forum/genera...ulley-msd.html

but it should be timed up as follows

 

bottom pulley is timed to the mark together with pulleys, the aux shaft is one tooth off when everything else is lined up. Was timed by a tuning firm i beleive so checking whats been done. Seems there is no reason for it to be off by one? and all should be timed to relevant marks? (As per diags, cheers LHD220Turbo)

 

If the dizzy PHASE sensor is out, it will NOT run right.
This needs to bang on, otherwise it overfuels massively all the time, don't know what tuning firm you used, but maybe not use them again ?
tabetha

 

Looks more like 1/2 a tooth in your pictures, I think you will find that when the crank is at TDC and the phase sensor is aligned correctly that the cams wont line up because the head has been skimmed. Therefore you end up with the cams 1/2 tooth out. This doesnt affect idle quality at all.

My ALS doesnt affect idle quality at all.

 

Evening, thanks Andrew for posting for me. To clear things up 4 of the 5 timing points are spot on, crank, both cams and aux pulley are all lined up to the marks spot on. I would like to know what effect rotating the dizzy will have on driving and running feel please? the dizzy is about half to one tooth out as per the top pic,and can be adjusted by undoing the bolt holding the dizzy into the block and rotating in the block- should I do this or leave it as it is?
I felt the engine seemed to hold back- almost missing constantly and it sometimes hunts at idle as though it is about to cut out but Ive only driven it once. I can count out the std ISCV valve modded for ALS thanks Stu but should I adjust the dizzy or is it OK being out? I suppose Stu would adjust it at a setup if needed anyhow I just need it to get there intact.
Thanks for your replies so far guys

 

OK just to clarify, the timing is all correct the only item out is the dizzy itseld any reason why and what effects will I notice driving the car like this please?
crank correct


cams correct

aux pulley correct


this leaves the dizzy out by 10degrees say?


The question is should I adjust it or leave it, I would really more than anything just like to know what this would feel like in real terms re:the driving feels/cars performance thankyou all

 

Having done the same as you as a experiment, I can tell you it overfuels massively, feels very flat starts ok but may chuck out soot, the phase needs to be where it should be as this signals the ecu to go into seqential injection, it will also buck and kick a lot when driven.
The aux pulley doesn't matter where that is so long as the dizzy scribe mark and rotor arm are lined so that the mark falls in the middle of the rotor arm.
The only thing you have to watch when turning the dizzy is if using a angled cap, is that you can turn it enough without hitting the engine manifold.
In my experience it matters greatly that the marks on the dizzy are timed as they should be, as that is where the ecu expects them to be, but up to you if you bother changing them or not.
tabetha

 

Hi guys thanks for your replies, thanks for your comments tabetha really helpful post will pass them on and recommend it be changed, makes sense with the info we have.

Thanks Again

Andrew

 

Really you did that Tabetha?!?! Thanks ever so much, thats brilliant, yes it stumbles and holds back, was missing something, I will line them up for when I start it up next. Thanks again I cant believe you did that

 

It was an unintentional experiment, I was on the phone on me left ear whilst timing me engine up, noticed it was out but then forgot about it and left it to see what would happen, sounds better than I ballsed it up!!
tabetha