SuzukiSavage.com - Port and Polish

paulmarshall Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1268 Carterton,New Zealand Gender:	Port and Polish 04/23/13 at 23:31:22 Has anyone ever done a port and polish on a Savage cylinder head? And if so how much can I take out of the cylinder head exhaust port. I got this photo from "The Savage combination photo CD", Anyone else done this mod?
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paulmarshall Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1268 Carterton,New Zealand Gender:	Re: Port and Polish Reply #1 - 04/23/13 at 23:34:06 This is currently the state of mine.
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Gyrobob Serious Thumper Offline Posers ain't motorcyclists Posts: 2571 Newnan, GA Gender:	Re: Port and Polish Reply #2 - 04/24/13 at 03:39:36 I'd rather use extrude hone.
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Dave

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Re: Port and Polish
Reply #3 - 04/24/13 at 04:39:08

Paul:

You seem like the "do-it yourself" kind of guy......
Is this something you will do yourself, or hire done?

GYROBOB:

That extrude honing looks slick - have you ever had it done?

I spent about 20 minutes looking at the web and I could not find any prices listed for doing a single cylinder engine. Most of the websites I found catered to V-8 engines, and the prices for doing those were more than an entire used Savage engine costs!

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« Last Edit: 04/24/13 at 09:55:02 by Dave »

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paulmarshall

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Re: Port and Polish
Reply #4 - 04/24/13 at 11:20:37

I will do it myself.
I too can only find youtube clips showing how to port and polish V8s and other multi cylinder engines. The principle is the same.
The photo shows a ported exhaust port from The Companion photo CD. The red area I cant touch other than a polish. But the blue area I would like to remove that lip.Sorry for the shaky hands It is 630am and I am on my second coffee.Could I take out more than what's in the photo? It looks like a small lip still needs to come off.
Anyone done this?

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Serowbot

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OK.... so what's the
speed of dark?

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Re: Port and Polish
Reply #5 - 04/24/13 at 12:06:44

I actually thought these pics were mine... ( I did exactly the same)...
...But,.. these are Truckinduc's...
... before...

... after...

I opened up the outlet some,... smoothed the passage as much as I could, and slightly rounded that "torque hump" that runs horizontal across the top... Don't take too much off that... I don't know what's under it...
... as far as intake goes... don't port or smooth anything... There is a head bolt that partly enters the intake manifold chamber,... you can smooth that flat if you like, but don't smooth the passage...

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Ludicrous Speed !... ... Huh

...

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paulmarshall Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1268 Carterton,New Zealand Gender:	Re: Port and Polish Reply #6 - 04/24/13 at 12:18:20 OK thanks Serowbot, Why can't I polish the intake?
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Re: Port and Polish
Reply #7 - 04/24/13 at 12:18:48

I know what is under that hump.....the base of the valve springs! That flat humpy area is not very thick and it lies directly under the exhaust valve springs.

OK.....I will fess up......I have also done some work on my head.

I opened up the exhaust ring a bit, smoothed out the rough castings, and sharpened up the divider between the runners.

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paulmarshall Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1268 Carterton,New Zealand Gender:	Re: Port and Polish Reply #8 - 04/24/13 at 12:25:14 What grade sand bits did you use on your bremel?
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Serowbot

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OK.... so what's the
speed of dark?

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Re: Port and Polish
Reply #9 - 04/24/13 at 12:25:42

paulmarshall wrote on 04/24/13 at 12:18:20:

OK thanks Serowbot,
Why can't I polish the intake?

You can polish it if you want... it's just that, it doesn't do much good, and it can reduce performance instead of improve it...
Some texturing along intake passes, are said to help with fuel atomization...
At least,.. that's what I've read ... Huh

...

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Ludicrous Speed !... ... Huh

...

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paulmarshall

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Re: Port and Polish
Reply #10 - 04/24/13 at 12:27:29

Serowbot wrote on 04/24/13 at 12:25:42:

paulmarshall wrote on 04/24/13 at 12:18:20:

OK thanks Serowbot,
Why can't I polish the intake?

You can polish it if you want... it's just that, it doesn't do much good, and it can reduce performance instead of improve it...
Some texturing along intake passes, are said to help with fuel atomization...
At least,.. that's what I've read ... Huh

...

Thank You Serowbot I will take your advise on board.

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Gyrobob

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Re: Port and Polish
Reply #11 - 04/24/13 at 15:22:13

Dave wrote on 04/24/13 at 04:39:08:

Paul:

You seem like the "do-it yourself" kind of guy......
Is this something you will do yourself, or hire done?

GYROBOB:

That extrude honing looks slick - have you ever had it done?

I spent about 20 minutes looking at the web and I could not find any prices listed for doing a single cylinder engine. Most of the websites I found catered to V-8 engines, and the prices for doing those were more than an entire used Savage engine costs!

I have not done it myself. I have seen the result of the work on aircraft cylinders and it looks quite impressive. I like the way it is so nicely smoothed up, but without a lot of metal hogged out of the passages.

It would probably cost around $250.

Contact info:

Rick Miller
Kennametal
T 724.864.8438
T 800.613.1065
M 724-396-1512
F 724-863-8759

Kennametal Extrude Hone | 235 Industry Blvd | Irwin PA 15642 | www.extrudehone.com

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ZAR

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Re: Port and Polish
Reply #12 - 04/24/13 at 20:19:31

Serowbot wrote on 04/24/13 at 12:25:42:

paulmarshall wrote on 04/24/13 at 12:18:20:

OK thanks Serowbot,
Why can't I polish the intake?

You can polish it if you want... it's just that, it doesn't do much good, and it can reduce performance instead of improve it...
Some texturing along intake passes, are said to help with fuel atomization...
At least,.. that's what I've read ... Huh

...

Exactly Sero. While I don't claim to know all the science behind it, I've worked with enough combustion equipment to understand the principal behind this. The more the fuel droplets are broken up(atomized)the better and more complete mixing with air and better burning of the fuel.. This equals better performance and better economy. Now if you can smooth out the path of the air/fuel flow and then recreate a roughened surface of the intake............ Grin

. Then you've got some kick!

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Yellow 1996 Jetted and Dunstall exhaust. Dakota Chubby Bags, Memphis Slim shield,Tank Bib from?? Seat riser mod. More to come!

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paulmarshall Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 1268 Carterton,New Zealand Gender:	Re: Port and Polish Reply #13 - 04/25/13 at 13:33:59 paulmarshall wrote on 04/24/13 at 12:25:14: What grade sand bits did you use on your bremel? Its ok I found this from eastwood that answers this question. http://www.youtube.com/watch?v=9_PfzOIgzT8
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