Chico 88mm P&Cs, anyone use them ?

QRP · Last edited by QRP on Wed Mar 09, 2011 2:52 pm; edited 1 time in total

has anyone used these P&Cs Question

http://www.thesamba.com/vw/classifieds/detail.php?id=806472

thinking of getting a set for a single port motor and was looking for some feedback on them.

norcalmike · Posted: Thu Mar 10, 2011 8:29 am Post subject:

Bump - Anyone care to guess what they may be like?

manoa · Samba Member Joined: January 08, 2006 Posts: 198

I am waiting on a set to play around with on a spare motor. When I get them I'll let you know.

Hopefully the thickness of the barrel is where you need it to keep the heat/cooling problem in check (warp, blowby, etc.)

As you can see the bottom of the cylinder's at the seal to the case are ultra thin. As long as it seals well there between the cylinder and case, the thickness of the cylinder should not matter much (I hope).

Anyway for my project it should not matter much. Other than that I think they are AA china stuff, so don't plan on using them for anything to serious.
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norcalmike · Posted: Thu Mar 10, 2011 10:18 am Post subject:

billbot · Samba Member Joined: February 04, 2011 Posts: 10

I have a set of these that I am using for my engine build. As others say, check to make sure they are within specs. as some of the parts from China (or anywhere for that matter) can be "off".

One thing you must take in to consideration when running these is their thickness at the combustion chamber. These cylinders are 5.25mm thick up top. Even though the OD is the same as a 90.5/92 thin wall, the ID is not the same. One head builder I spoke with had concerns with them sealing properly with his heads that had been set up for 90.5s, since the inside of the barrel would not be flush with the outer edge of the combustion chamber of the head. As long as you talk this over with your head builder, something can be worked out for running them.

The other thing you must consider is that the case side is the same size as 85.5s so you would run that size shims at the case side. I'm not sure if anyone makes copper head shims that will be compatible with these. I am planning to call Chico Performance tomorrow to find out how they are setting these up.

Still need to order some heads for my build, so I will let you know exactly what the outcome is.

billbot · Samba Member Joined: February 04, 2011 Posts: 10

Spoke with Chico Performance this morning. I was told it IS important that the ID of the cylinder not overlap the combustion chamber of the head for proper sealing etc.

Also, I was told the copper head shims/gaskets would not be a problem even though they are not the same thickness as the cylinder.

I will be ordering my heads in the next week so I'll let you know how that turns out too.

hsosa1 · Posted: Fri Mar 11, 2011 7:23 pm Post subject:

if u get these what would the CCs be?
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manoa · Samba Member Joined: January 08, 2006 Posts: 198

sirkisstic · Posted: Sun Mar 13, 2011 7:47 am Post subject:

well, since they fit the stock hole in the case, you can run paper gskts to seal em up, I'm sure they will run as long as a set of 92's would, but I wouldn't run them on stroker cranks, Joe, pro motor builder.

Bashr52 · Posted: Sun Mar 13, 2011 8:06 am Post subject:


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