Exchanging Injection Tab On S16 Inlet-Cams

[Willem_Jacobs 6 1 Cars]

Hello everybody,

 

Geoff Clements (jorg) is offering a Stage one PeterT inlet cam for a S16 engine... But it's missing the injection timing tab... Since i have a 205 running a standard citroen ZX 16V engine (similar to the 306/405 ones) i would like to upgrade it to take this cam (should be a straight fit)




Can the tab be exchanged between cams?
How to set the 'timing' / 'position' to the tab?

Can this be done by someone with some experience of rebuilding engines?

(I've done a rebuild of a S16 head and a complete TU5J2 engine)

Would like to give this some more power:




> i know the 'dip' shouldn't be there, but this has been overcome as i later discovered the valves on the ACAV system were not closing completely as the rod ends on the vacuum diaphragms were not set to the correct length

[welshpug 1,657]

Mark its position relating to the lobe next to it, then press it off

 

Might need top heat it as well, but I;ve not tried to remove one, PeterT would be best to ask.

[Willem_Jacobs 6 1 Cars]

Seems to be in the exact position of the number 3 cylinder lobes (counting distr > flywheel) i'm just wondering if it can be done, using just simple tools...

[welshpug 1,657]

Depends what you call simple tools...

[Willem_Jacobs 6 1 Cars]

got pretty much all the tools for a engine rebuild available, it's just the bearing regrind stuff i don't have the tools for. I managed to install the piston pen on a TU5 engine for example... (needs to be heated / cooled to remove / install)

[petert 586]

It's a heavy press fit. I have got them off in situ with a modified 3 leg puller, but ideally you'll need a 10T press. The exact position isn't critical.

Edited January 25, 2013 by petert

[Willem_Jacobs 6 1 Cars]

Think i can source someone with a press that will do the job....

Peter,

 

Can i use the standard S16 pulley or will i need a number 3 or 4 pulley for installation on a regular XU10J4 engine?

[petert 586]

Either a #3 or #2 with an offset key.

[Willem_Jacobs 6 1 Cars]

A # 2 fitted with an offset key or a standard # 3 one that is??

 

A friend has a stage one inlet cam fitted but his engine turns out to be having problems on idling.... Any more info on that??? He has it fitted with a # 4 pulley tho.. That might explain the problems there...

And this offset key, got more info as to where i might get one, or specs (so I can have someone machine one for me?) ??

Edited January 25, 2013 by Willem_Jacobs

[petert 586]

http://www.taylor-eng.com/images/head/cam_key_instructions.pdf

 

My key advances 1.5 deg cam (or 3 deg crank). PM me to work out cost/postage.

 

A #4 pulley would advance it too far but not enough to cause significant idling problems. To be precise, it needs to be set at 0.065" lift @TDC, which equates to 109 deg lobe centreline.

 

A #2 plus key would move it from 114 to 111 deg. However, as all Stage 1 cams are advanced 1 deg during the grinding process, it will actually be 110 deg LCL.

[Willem_Jacobs 6 1 Cars]

So it's either a offset key or a #3 pulley then... with a small benefit for the #3 item... let me try and source one of those first....

[petert 586]

That's how I have the S16 engine setup in my 405 daily driver. It works well, with a very broad power band. Your country had DFW's so there should be plenty of #3 pulleys around.

 

I think you mean the tang is lined up with the lobes of cylinder number 2.

Edited January 26, 2013 by petert

[Willem_Jacobs 6 1 Cars]

yeah, you're right, i made the classic mistake there, starting to count at pulley....

So it's the 148 bhp rated engine that should have #3 ones fitted???
I assumed it was later 160 bhp ones that had #3 ones and the 148 bhp rated that had the #4 inlet....

I'm confused now....

Edited January 26, 2013 by Willem_Jacobs

[Willem_Jacobs 6 1 Cars]

damn, i really should sleep some more.... i somehow misread the table on your site...

Peter; Do you happen to have a pic of a #3 pulley (marks stamped in it) around on the web... i want to source one as fast as possible and since my parts are nowhere near where i am right now it's difficult for me to explain where the marks should be on the pulley....

Edited January 26, 2013 by Willem_Jacobs

[petert 586]

Best I could do at short notice.

[Willem_Jacobs 6 1 Cars]

thanks, sure this will help!