Got a problem with the timing / dizzy setting on the RST.

You have to have the dizzy in the completely opposite position to a normal RST to get any power, and then on boost you get pinking. Its definitely not right.

Tried different ecus (both) but didn't change it, the ecu vaccum pipe is completely free and clear. Could it be something to do with the knock sensor? As the valve gear is quite loud (double springs etc), so just wondering if its picking this up. And if so would the knock sensor mess with the timing?

Some bits its got are: collins chip, t2 cam, vernier (3deg advance), boost @ 13/14psi.

Any ideas?

 

sure you got leads on right way round? wotrth checking first ?

 

I hope so (been on the rollers twice like it). Its still putting down 187bhp, 191lb/ft torque (as recorded on Sat) - But it should do with the spec, its just not right. With the timing sorted it should be well into the 200s.

 

Also the map sensors can go bad with old age and do things like that.

 

mate with the TDC marking on the pulley the rotary arm should be point to cylinda no1 if i remember correctly. see pic below if it helps

 

PS im comming near ur way on friday can always pop by andhave a look.

 

 

pmsl@ adam u cheeky cunt.
hows the shitter

 

 

Cheers Stevo - but i gotta work on Friday (already used loadsa my holiday and were only a month into the year ), thanks anyway chap.

I will investigate though .

Jesse - am I right in think that the map sensor is the black bit (that clicks slightly when you touch the throttle) on the side of throttle body housing? I will also try disconnecting the various wires and see if that does owt!

Cheers for the thoughts guys.

 

BTW heres a couple of photos, 1 - vernier advance, 2 - dizzy position right over to the right (anywhere back from this and its just shit), arrghhh

 

Exeter: No no! The part you just described is the throttle position switch which senses idle and full throttle. The MAP (Manifold Absolute Pressure) sensor is inside the ignition ecu. It's the component to which the manifold vacuum/pressure air hose goes to.

 

I'm a dick

Oh yeah - thats what alters the timing on boost etc ain't it? Tried different ecus with no difference so, probably rule that one out. (Although will never rule is out completely - could always be a coincendence).

 

Are you absolutely sure, that you don't have the cam belt pulley off by a tooth? have you actually measured the cam timing? Same with ignitoin timing have you actually measured it? I hope you did that with the vacuum hose disconnected.
If you want to rule out the knock sensor you can unscrew it and put it away somewhere, but still connected to the loom. Then plug the knock sensor opening in the manifold with something and give it a try. If you get more power, then it's the knock sensor limiting the going. You can't just disconnect it as that will make the ecu go crazy.
Does someone know for sure, does the knock sensor effect ignition timing, Ĺmĺl-valve, or both?

 

I'm not to surprised the it pinks I don't think that you can advance the dizzy much more As JesseT says it looks as if the cam timing is out.
How did you establish the can timing when the pulley was fitted?
Do you know what the ign timing is at idle it should be about 12 digress bellow 900 rpm.


Cheers

Steve

 

Got a thread in the general discussion going on this also now

Anyway - cam timing was setup and vernier set when the engine was built. It is quite possible that its out by a tooth on the pulley. Think my first move is to check that the cam timing has been set at the 114deg for the t2. Gather i need to get a dial gauge or something

Will try knock sensor then - cheers chaps

 

im having same prob i think, was told should b making 230bhp with engine im currently making 203bhp and 203lb/ft at 16psi so near on 30bhp less of what i expected plus its making it so late in the revs, (main concern) only make 100bhp at 4000rpm then at 4600rpm im making 185-190.

most rst graphs ive seen go sky high at 2500rpm (or there abouts) whats ur power graph like m8?

it was suggested at rr i went to that cam timing could b out, need to get it checked asap

what is it thats mentioned about belt being off by a tooth? soz i dont understand, not a mechanic!!

 

Hmm - only just getting my head around the cam timing / ignition timing thing meself - the post in the general discussion area, i think explains more.
https://passionford.com/forum/viewto...296&highlight=