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Sat Jun 26, 2004 10:31 pm

I posted this on the call look forum too but any advice helps, Well Im getting my new pistons in and now I need longer barrels. How should I go about ordering them, Im running an 86mm crank and 5.7 rods. Ive been told I would need to shim the heck out of them to work but that would only leave about an 1/8th inch in the case. Doesnt seem safe. I have my cima pistons and cylinders still, should I use these barrels to measure the deck height or just get the longer ones measure those then send them off to be cut. Either way, does anyone know where I could have them cut right?

Sat Jun 26, 2004 10:57 pm

you're talking about the cylinder walls right? Usually when you buy the pistons you buy the cylinders as well. I don't think that you want to use a used cylinder and a new piston. As I understand they wear into each other, and the Cylinder will already be worn and the piston won't be nd it won't run the same... so to answer your question the cylinders should come with the pistons (it sounds like you are waiting on them) and if you don't get them youneed to either return them and buy a matching set, or find some where that will sell you just the cylinders. Or I'm just wrong period

Sat Jun 26, 2004 11:21 pm

any local machine shop that knows what their doing should be able to handle the job.

Sat Jun 26, 2004 11:25 pm

I would mock assemble it with the cima barrels, measure the deck and figure out how long of a cylinder you are going to need.Then call Heads-Up Performance and tell them what you need,they can cut their long cylinders to any length you need.

Sat Jun 26, 2004 11:32 pm

hmm it appears I am wrong. Sorry didn't even occur to me that you said you were using that whopping crank or the rods... Well that was (one of my many) my dipshit moment of the day. Carry on and ignore me :roll:

Sun Jun 27, 2004 12:19 am

Viggy wrote: hmm it appears I am wrong. Sorry didn't even occur to me that you said you were using that whopping crank or the rods... Well that was (one of my many) my dipshit moment of the day. Carry on and ignore me :roll:

Lol yeah vin, im using better pistons than cimas, Im just confused about the cylinders, I have a new set of cima pistons and cylinders I can use to mock up with, but Ill end up selling those. a total waste of $180 :(

Sun Jun 27, 2004 7:53 am

When I put my 2276 together with the long century cylinders and a set of wiseco pistons I set everything up and got initial deck heights. These turned out to be around .610 in I believe. I then took the cylinders back off and had a friend of mine turn them down roughly .550 to get to the deck height I needed to run. You need to get everything together with the pistons and rods you plan on running and find out how much you need to turn them down. It may require that you swap around some rods and pistons to get the deck height even on all cylinders before you cut them. I've also seen where the cylinder decks aren't the same height on both sides of the engine. If you measure everything properly that difference can be made up for in the cylinder or with a small shim on the one side or take it all the way back apart and fix the case. By the time you get done assembling the long block you should be able to do it in your sleep.

Mike
59 single, 69 bus, 73 super

Mon Jun 28, 2004 8:40 am

why are you running such a long rod?? with an 86mm i wouldn't go longer then a 5.5...hell i like a 5.352 with a 86 ...

Mon Jun 28, 2004 10:49 pm

BugBite wrote: why are you running such a long rod?? with an 86mm i wouldn't go longer then a 5.5...hell i like a 5.352 with a 86 ...
Jason from vw paradise recomended the rods, supposed to help with the rod angle.

Tue Jun 29, 2004 6:18 am

I think your best bet is to actually get them and do a full mock up as suggested. its slow doing it this way, but some times necessary. i am lucky that i have a machine shop that i use that is only 10 minutes away on a bad day.
maybe you can contact Damon Harmon. I would guess that he could cut them down for you to exactly what you want. (a guess, but im sure he is already set up to cut cylinders down like that) and he is closer then sending them to cali.

you will probably only need to cut .250-300 off of those. and you might even want to think about cutting off some of the top to push the fins closer to the combustion chamber UNLESS your heads have been fly cut pretty deep and you need that top lenght.
they are something like .800" longer then a cima and id say about 1/4 of that lenth has been added to the top just for deep cut heads that you might have other wise cut the fin off the head to fit a standard cylinder. But thats just a prefrence.

the difference between the two.

Wed Jun 30, 2004 9:20 am

you probably already have something arrange. but Jack has some new JE pistons already set up here in the classifieds.

Wed Jun 30, 2004 6:33 pm

I still havent had time to order my cylinders but Im going with JayCees form Jack. He was a no bullshit guy, and even though Im still confused on how to figure out how much to cut, I think Ill be able to figure it out when the short blocks assembled and I casn mock up the rest. the nitrous industy is kickin my butt right now and I stay on the phone from 9am till 6pm when I leave. I have a buddy in Austin that has a set of Wiseco's that he said hed sell me cheap so When I get them Ill be putting her togethor. all you VW guys are the best, Mike I have your bug doing a wheelie as my screen saver. too cool 8)

Thu Jul 01, 2004 2:29 pm

Well once you get the pistons, you could just use the cima's to get a mounting surface to mounting surface measurement, then call Jack up and tell him how long you need them and he can cut them on the spot before shipping. give actual lenght instead of how much to cut off.
dont know how hard it really is to measure with the piston sticking out of the cylinder, but im sure its possible.
I have a .400 shim that i use when setting up long stroke/long rod combos.
actually that picture above, the cima cylinder actually has a .512 shim on it.
good luck