Tuning Contemplating an 866 cam, questions

[vitorio]

Hi guys, just rang the garage, and for my cilinderhead to be skimmed, the cam needs to come off, so i figured that is the perfect excuse to fit an 866 cam right away. I do have a few questions though:

1) do i use the p75 cam sprocket, and if so, will the timing mark on the sprocket match up with the mark on the head to give me the correct timing? if not, how do i set the timing up correctly using the cinq cam sprocket?

2) i assume i'll need to replace all the bearings right?

3) anyone know the valve clearances for the p75 cam?

I looked around a fair bit, but i havent found any solid answers yet, so some help would be very much appreciated

 

[woj]

1. You can use the either cam sprocket, they should line up OK

2. Not really

3. Inlet 0.35 +/- 0.05 mm, exhaust 0.40 +/- 0.05 mm

BTW, you do remember that I have an 866 cam for sale?

 

[whitz]

1. use the pulley off the original cam so it matches the other pullys for belt etc, the pulleys and cams are keyed so you cant go wrong

2. the bearings are teh head itself so they cant be replaced anyway

3. as woj said

Ash

 

[vitorio]

1. You can use the either cam sprocket, they should line up OK

2. Not really

3. Inlet 0.35 +/- 0.05 mm, exhaust 0.40 +/- 0.05 mm

Thanks, makes it a whole lot more do-able to my novice mind.

BTW, you do remember that I have an 866 cam for sale?

I totally forgot, you are in the enschede area right? would you be up for sending it by post? I hardly ever get that far east.

 

[woj]

Need to dig it out from the basement first, posting is not a problem, will PM you later

 

[vitorio]

Need to dig it out from the basement first, posting is not a problem, will PM you later

Cool, hit me up when you got it dug up, in the meanwhile i'll get the head off and have it skimmed.

 

[fingers99]

Get the valves/seats re-cut while you're at it.

 

[DimSei]

Hello guys, greetings from Greece. I just fitted the 866 cam on my 2001 sei 1108cc but the engine light shows up times by times and the engine doesnt work well.. I mean it stops revving by the time i am on the road and my little sei doesnt seem to start again for a while and when it starts, does same.. Any help pls? i am very worried guys need your help and sorry for my english.. My sei is completely non tuned and the only modification is this camshaft.

 

[mrcinquecento]

I'd check the timing first of all, (also, all shims correct?), belt tension too. Would also check for any induction leaks while i was checking stuff over. If all is well, i'd be tempted to pop the other cam back in for a test (doesn't take that long after all on these engines), if it does it on the old cam too, it's most likely just a sensor problem, crank most likely. The fact it showed up at the same time as a cam swap perhaps just a weird coincidence.

Of course, If you have another sensor lying about, swap that in instead of cam swapping for a test

 

[DimSei]

Thank you so much for your response. Till now i just unpluged the two plugs on the TB, went for a ride without the one that was lighting on the check engine. Then got them back after i blew them so as to clean a little and from the evening till now i dont face any problem.. THANK GOD! Btw it wasnt me that did the whole work, i let an experienced engineer to do that for me. I warned him to take care with the timing and was always behind him to make him a little nervous so as to do his best. I dont have any timing problem, checked them all again but i am gonna be carefull next time and pay attension to what you mentioned. Again thank you so much for your time to respond me

 

[DimSei]

Also, may i ask, are one of the two plugs the map sensor? And if yes what is the other plug called? i mean the one that regulates the rpms

 

[fingers99]

Also, may i ask, are one of the two plugs the map sensor? And if yes what is the other plug called? i mean the one that regulates the rpms

I'm not sure which you mean. Photo would help.

 

[DimSei]

while you look from the top of the TB on the left side there are two plugs close to each other. I finally understood that they were non of them the map sensor.. but what are their abilities?

 

[blu73]

The 2 sensors your talking about are the TPS (Throttle Position Sensor) so the ecu knows what the throttle angle is. And the other is the ICV (Idle control valve).

Map sensor is on the underside of a little metal tab next to the ecu, follow the vacuum line from the inlet manifold and you will find it