4 mil Stroker Build Questions...Port Timing.

[jayzx10r]

Hello. I recently picked up this 2002 Banshee that has a +4 stroker and is (supposedly) dune ported but after doing a search under "4-mil" I still have questions...Big suprise!!!

 

I guess I should qualify myself first by saying that I have a bit of mechanical experience and will have no problem cracking the cases when the time comes. I have a big ass Snap On tool box, MIG and stick welder, a 60G compressor, a strong telescoping magnet for when I drop stuff down into the crankcase and a Crescent Hammer to assist in fine tuning!! I can break stuff with the best of 'em!! Besides, No Worries...I have a Chiltons!! :laugh:

Anyhow....

 

So I have already checked the stroke...58MM...so I know have a +4. Compression while warm (100ft above Sea Level, WOT) was 160. I don't see a 2mm plate under the cylinders. What should I see on the head...domes cut with a relief for the pistons?

 

I'm going to pull the head/cyl to take a look at what I have lurking down there and was wondering what identifying marks, numbers, port count, or other telltale signs I should look for to verify my setup.

 

Does anyone have port timing specs for stock and/or dune porting? How many ports should there be on a stocker? I'd like to measure down from the top of the cylinder (if this the best way to do this) to ensure I actually have porting and timing to match my +4 stroker. Any hints would be appreciated. This is probably the most important bit of info for me.

 

What is the easiest way to determine if I have the standard or long rod setup while the crank is still in the cases? By part numbers?? Do "HotRods" have that cast into the rod or? Same with stock/aftermarket pistons? Where are these #s or ID marks located?

 

As for consumables...Do you reuse CoolHead O-rings if they still look good? Is there a preferred sealant for the base gaskets/reed cages?

 

Any other tricks of the trade would be much appreciated.

 

Thanks for your comments and assistance..

Jay from SanD.

Edited January 24, 2007 by jayzx750

[wesw]

pull the head off adn look at the domes. should be like 2mm cut into it for the pistons.

 

you could post a pic of it and would be pretty easy to tell

 

 

as far as porting. you need a degree wheel toget the most accurate reading. or you can measure the exh port.

 

one guys dune port might not be anothers SO.

 

HOPE THis helps