Author Topic: porting: spare heads wanted (Read 3707 times)

paulages · « **on:** January 02, 2008, 08:21:52 AM »

i'm about to begin learning the art of porting. anybody got any extra heads laying around they want to donate or sell me cheap?

shoemanII · « **Reply #1 on:** January 02, 2008, 09:20:07 AM »

pm sent today,
bobp

cbass*gxc · « **Reply #2 on:** January 02, 2008, 10:03:38 AM »

Is this what you want? If so you can have these for the price of shipping.

paulages · « **Reply #3 on:** January 02, 2008, 10:10:30 AM »

yes, that oughta do. PM coming your way.

Big Jay · « **Reply #4 on:** January 02, 2008, 05:47:32 PM »

You gonna port that cylinder block?

Sam Green Racing · « **Reply #5 on:** January 02, 2008, 05:50:20 PM »

MRieck · « **Reply #6 on:** January 02, 2008, 07:16:52 PM »

Quote from: Big Jay on January 02, 2008, 05:47:32 PM

You gonna port that cylinder block?

You just couldn't resist could you.

Sam Green Racing · « **Reply #7 on:** January 02, 2008, 07:20:20 PM »

NO NO NO

sorry Paul

Sam.

scunny · « **Reply #8 on:** January 02, 2008, 08:10:57 PM »

you could make that cylinder block a 2 stroke

Sam Green Racing · « **Reply #9 on:** January 02, 2008, 08:15:49 PM »

spose you could saw it into two and have 2 two strokes

paulages · « **Reply #10 on:** January 02, 2008, 11:09:25 PM »

Quote from: Big Jay on January 02, 2008, 05:47:32 PM

You gonna port that cylinder block?

them's some mighty big ports.

Sam Green Racing · « **Reply #11 on:** January 02, 2008, 11:15:35 PM »

yal need some mighty big carbs Paul

paulages · « **Reply #12 on:** January 02, 2008, 11:17:52 PM »

Quote from: SamCR750 on January 02, 2008, 11:15:35 PM

yal need some mighty big carbs Paul

i was planning on bolting up four holly four-barrels. wait til you see the cylinders i'm using!

Terry in Australia · « **Reply #13 on:** January 03, 2008, 01:17:53 AM »

Is Big Jay on vacation?

cbass*gxc · « **Reply #14 on:** January 03, 2008, 06:41:00 AM »

So do you actually port the head and not the block?

dustyc · « **Reply #15 on:** January 03, 2008, 06:50:54 AM »

Yup. You're trying to optimize the flow of the gas/air mixture and exhaust through the combustion chamber. You do it by altering the intake and exhaust ports in the head.

cbass*gxc · « **Reply #16 on:** January 03, 2008, 06:55:25 AM »

Ya so I knew that!

Just wanted to keep you guys on your toes and make sure you actually knew what you were talking about.

So what is it called when you put bigger pistons in the block?

And paul do you still need this block?

rbmgf7 · « **Reply #17 on:** January 03, 2008, 08:23:42 AM »

i was wanting to give porting a shot as well. i have 2 spare junk 77/78 heads to practice on. what tools would you use? i have black&decker variable speed dremel and i stumbled across a port/polish kit on jegs for $30. the kit is just different size and grit sanding drums made for dremels.

mgmuellner · « **Reply #18 on:** January 03, 2008, 08:46:37 AM »

Quote from: cbass*gxc on January 03, 2008, 06:55:25 AM

So what is it called when you put bigger pistons in the block?

Boob job?

paulages · « **Reply #19 on:** January 03, 2008, 08:50:21 AM »

Quote from: cbass*gxc on January 03, 2008, 06:55:25 AM

Ya so I knew that! Just wanted to keep you guys on your toes and make sure you actually knew what you were talking about.

So what is it called when you put bigger pistons in the block?

And paul do you still need this block?

i guess i assumed you knew which was the head, and was actually gonna send that to me.

it's on the left in the picture, with the exhaust studs hanging out. i don't need the cylinders. bigger pistons in block is called overboring.

pdxPope · « **Reply #20 on:** January 03, 2008, 09:51:34 AM »

Quote from: mgmuellner on January 03, 2008, 08:46:37 AM

Quote from: cbass*gxc on January 03, 2008, 06:55:25 AM
So what is it called when you put bigger pistons in the block?

Boob job?

Wrong thread....

-JP

cbass*gxc · « **Reply #21 on:** January 03, 2008, 12:46:54 PM »

Ya sorry about that. I am still a little ignorant when it comes to engines. But that is why I bought this bike, so I can learn. Man I feel like an idiot.

And to mgmuellner.....A boob job is when you put bigger blocks in the pistons.

dusterdude · « **Reply #22 on:** January 03, 2008, 01:34:00 PM »

cbass,dont feel so bad,the only idiots on here are k8 owners.

Big Jay · « **Reply #23 on:** January 03, 2008, 03:47:43 PM »

Quote from: Terry in Australia on January 03, 2008, 01:17:53 AM

Is Big Jay on vacation?

What's a vacation???

If you really want to learn to port heads, forget the Dremel. Get an air grinder with 1/4" chuck. They are now pretty cheap thanks to our friends in China.

Youwill need sone long shank carbide cutters. For the abrasives to finish up, http://www.sa-motorsports.com/

Jay

Hockers Choppers · « **Reply #24 on:** January 03, 2008, 03:53:29 PM »

If You are going to use the head after porting, please save the trouble and liver and have a pro port Your head!!!!! You will most likely loose HP! This IS brain surgery and rocket science put together!!

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Author Topic: porting: spare heads wanted (Read 3707 times)