Just got done porting my cylinders

[differentstrokes]

I used the race logic stage 2 templates and ported my cylinders myself, I think it came out really well. Definitely worth the $50 I paid a site member for the templates and a few die bits and sanding drums I already had. Didn't take long and was actually pretty easy. Tomorrow I'll probably drop them off at the powdercoating place to get the exteriors bead blasted and probably cleared, then off to be bored. All I'll need then are new clutch plates before I put everything back together. Check the pick and tell me what you think since I'm no porting expert.

 

[2003LimitedBanshee]

The intakes appear to be fine, maybe could have slimmed down the bridge a bit more, but probably wouldn't have made any noticeable difference. But, what about the exhaust and transfers? That seems to be where the magic happens...

[differentstrokes]

I'll get some pics of the exhaust ports, they came out good and I polished the insides. I'm not going to mess with the transfers, I just cleaned up the bottoms of them and polished them smooth. Not really looking for anything drastic, just a good gain for trails and playing around.

[BigRed350x]

Transfers and exhuast is where you get the major power gains from. Transfer angles, flow volumes, flow velocities... all that sort of stuff plays a large roll in how your shee will build power as the RPM's go up. If you don't change your transfers but play with your exhaust and intake you're not really getting what you paid for with the templates. Take the time and do the transfers while you have the cylinders off, you will be much happier in the end. Mount up your cylinders and pistons and run a degree wheel and let us know what your port timing is.

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banshee's bottle neck is the exhuast port. intake isnt that serious as some port people do it way more then necessary . just my 02

 

your intake ports look nicely done , but big red is 100 % right listen to him =-D

[differentstrokes]

I smoothed out the bridges at bottom of the transfers, I just didn't cut the transfer windows any. Kind of hard to reach the way the angle is, the template instructions said it was optional so I'll probably leave them alone since I'm not going for drag. As for the timing, I haven't put the pistons in because the cylinders aren't bored yet. I've got .20 over vito's superstocks going in and they're cut on the exhaust side so I don't know how all this will turn out as far as timing goes. What's the best way to polish inside the transfer tunnels since dremel bits are a little big?

[BigRed350x]

I smoothed out the bridges at bottom of the transfers, I just didn't cut the transfer windows any. Kind of hard to reach the way the angle is, the template instructions said it was optional so I'll probably leave them alone since I'm not going for drag. As for the timing, I haven't put the pistons in because the cylinders aren't bored yet. I've got .20 over vito's superstocks going in and they're cut on the exhaust side so I don't know how all this will turn out as far as timing goes. What's the best way to polish inside the transfer tunnels since dremel bits are a little big?

 

You don't want to polish your transfers. You want to keep them rough, it will help keep the fuel atomized in the mixture as it travels. The only thing you want polished on the inside of your cylinders is the exhaust. You won't want anything sticking in that area, you want it to flow fast nd clean out of there. Everything else you can leave a rough finish. You need a special 90