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 Post subject: 866 cams
PostPosted: Thu Nov 29, 2012 11:43 pm 
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Location: Derby
Drives: Seicento, Stilo
After hearing about the various cams and the Punto 75 cam, I've found out that the later Punto 60's had the same cam. Having access to a number of 1242 engines I'm going to look for an 866 in amongst them. Does anyone have an idea of how to identify them easily?

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 Post subject: Re: 866 cams
PostPosted: Thu Nov 29, 2012 11:50 pm 
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I'm pretty sure they have 866 stamped on the end? Can someone confirm this? :P

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P677YFR the soon to be 1242 16v Cinquecento Sporting


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 Post subject: Re: 866 cams
PostPosted: Fri Nov 30, 2012 12:28 am 
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Joined: Thu Mar 22, 2007 9:20 pm
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Location: Teesside
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Yes, they have 866 stamped into the cam.

viewtopic.php?f=18&t=568

some info on lobes etc. in there. You may need a caliper to check the differences.

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.....make it idiot proof and someone will build a better idiot.


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 Post subject: Re: 866 cams
PostPosted: Mon Dec 03, 2012 9:31 pm 
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Joined: Tue Sep 30, 2008 2:44 am
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Location: Eastern London / West Essex
Drives: Cinquecento sporting
On a 1108 with exhaust manifold, Janspeed straight through, GSR, Tricker, McCrich, how much effect does this cam have on general running? Will the emissions at idle be taken out of the MOT allowance? Poor idle? Fouling of plugs?

Is fitting it worth the effort and cost of fitting?

I've had one on my car spares shelf for a while.

Thanks.

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 Post subject: Re: 866 cams
PostPosted: Mon Dec 03, 2012 9:38 pm 
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It won't make an appreciable difference to emissions etc., see the thread for overlap details.

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Pete, technical bod.

.....make it idiot proof and someone will build a better idiot.


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 Post subject: Re: 866 cams
PostPosted: Mon Dec 03, 2012 10:05 pm 
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Location: Eastern London / West Essex
Drives: Cinquecento sporting
Hey! :D Nice. So that person selling the 4x4 cam the other week and claiming it was the next this up from the 866 was plain fibbing!

Thanks Pete. So about 12% more lift and 6° earlier exhaust valve.

I have the SPI and it starts missing / cutting at about 7200. Could it be it's running too lean at that RPM? Making the 83, or so, BHP limit the SPI is said to have?

If I was somehow to acquire and fit the MPI parts, would I need a stand alone EFI such as Megasquirt or is there a suitable stock part I could use?

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Renault 5GT Turbo in lots of bits


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 Post subject: Re: 866 cams
PostPosted: Mon Dec 03, 2012 10:14 pm 
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Location: Teesside
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The 4x4 cam is particularly mild, even cooler than the standard SPI cam. 7200 ish will be the rev limiter, unless you've had it raised.

To go MPI you'd need to change the head, really. The bolt pattern for the inlet manifold is different. You can wire it batch fire from the standard SPI ecu.

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.....make it idiot proof and someone will build a better idiot.


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 Post subject: Re: 866 cams
PostPosted: Mon Dec 03, 2012 10:41 pm 
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Location: Eastern London / West Essex
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Would batch firing like that make it run very rich / poor mpg?

Are the exhaust manifold holes and height above the head gasket the same?

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Renault 5GT Turbo in lots of bits


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 Post subject: Re: 866 cams
PostPosted: Mon Dec 03, 2012 10:55 pm 
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Location: Teesside
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Exhaust ports are the same, yep. If you're doing an MPI swap you'd be better off getting it chipped/mapped or running an aftermarket ecu as you'll no doubt be tuning it.

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Pete, technical bod.

.....make it idiot proof and someone will build a better idiot.


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 Post subject: Re: 866 cams
PostPosted: Mon Dec 03, 2012 11:20 pm 
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Joined: Tue Sep 30, 2008 2:44 am
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Location: Eastern London / West Essex
Drives: Cinquecento sporting
I asked about getting the McCrich chip re-mapped and I was told that with this ECU, 1998 R reg Cinquecento, they'd have to take out the chip and read it, then perhaps somehow connect their laptop to the chip socket. Map the engine, then flash the chip and fit in back. So a palava and at least £300.

I can't justify the cost of an ECU and mapping that for this car at the moment. Now it leaking water into the cabin and needs a front shock to replace the Apex, and tyres. The used parts seems to no longer have any value at all and I don't feel much like paying out hundreds for stuff that 's immediately worthless.

So I wanted to keep it going on the cheap rather than spend £2k or so on it.

Pete, while I have your attention :) ....The car tends to break into understeer after a bit of roll. Would there be a thread that's going into this, ie, chassis and suspension setup? It is too low at -35mm? Or does something need renewing? Is it the Pirelli 700 tyres that go onto their edge? Does it need harder springs? It grips OK up to a point, adding more and more roll, then it's away. Thanks.

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Renault 5GT Turbo in lots of bits


Last edited by Ian S on Tue Dec 04, 2012 10:40 am, edited 1 time in total.

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 Post subject: Re: 866 cams
PostPosted: Tue Dec 04, 2012 9:38 am 
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Joined: Thu Mar 22, 2007 9:20 pm
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Location: Teesside
Drives: Panda 100hp
After chatting at last weekend's AGM, I think a rear anti-roll bar might be the way forward for this.

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Pete, technical bod.

.....make it idiot proof and someone will build a better idiot.


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 Post subject: Re: 866 cams
PostPosted: Tue Dec 04, 2012 10:46 am 
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Joined: Tue Sep 30, 2008 2:44 am
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Location: Eastern London / West Essex
Drives: Cinquecento sporting
A member here did make one of his own and I exchanged PM's a little bit about it. Not enough to make one myself though.

I phoned Eibach after seeing an ad possibly in Practical Performance Car, and they said the minimum order was 50 bars. I didn't think 50 would sell these days?

Maybe a smaller fabricator could be found who could make a smaller number?

Regarding the ECU and doing it on the cheap, I was hoping for an existing one that could be used with this 866 cam and multipoint EFI. Or a chip or a map that I could obtain cheaply and just drop into a suitable standard ECU. I presume there isn't anything like that then?

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Cinquecento Sporting 1.1 1998
Renault 5GT Turbo in lots of bits


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 Post subject: Re: 866 cams
PostPosted: Mon Dec 24, 2012 3:40 pm 
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Joined: Tue Sep 30, 2008 2:44 am
Posts: 184
Location: Eastern London / West Essex
Drives: Cinquecento sporting
Australian aftermarket rear anti roll bar for a Clio:

http://www.whiteline.com.au/product_det ... ber=BRR10Z

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Renault 5GT Turbo in lots of bits


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