who does decent CNC port and polish for a decent price?
11-01-2007, 05:12 PM
#1
who does decent CNC port and polish for a decent price? alright I recently i broke a timing chain, and im pretty sure i bent valves with the hotcam and the pistons I chose, i havent got around to tinkerin with it but hopefully will get the new chain on it tomarrow and take a compression check. If i have some bent valves and take the heads off again i mise well send them off for a nice CNC port and polish job. I was just wondering who everyone was having their's done by and what the price range was and the ammount of difference they saw in performance. Thanks!
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11-02-2007, 08:11 AM
#10
That is what AI does, I do not know about the others.
Their site lists prefered casting numbers which are basically 95 and earlier.
I know at least one shop mentioned above does not have CNC capability, so not everyone is reading your question before answering.
11-02-2007, 09:27 AM
#13
The earlier heads have more meat for porting. If you have casting number 12551561 heads and intake number 12552138 and you want the earlier heads I will do you a straight trade. Tell me which porter you want them shipped to. Let them check that they are OK. Then just ship me your stuff.
Let me know if you are interrested.
Daren
Let me know if you are interrested.
Daren
11-02-2007, 11:01 AM
#16
Maybe he recognizes that it is THE key to consistency and reasonable price. Not that quality CNC equipment is cheap, far from it, but to get anywhere vaguely close to the port to port consistency CNC offers, done by hand the portwer will have to go VERY slowly constantly measuring which will add up to a LOT of hours and a LOT of dollars and still not be anywhere near as consistent.
For a CNC port yes the initial master is hand done just one pair that the porter can put however much time in he chooses and then measured into the software and mirrored to get the other ports and it is saved for all eternity and exactly reproduced at will.
For a CNC port yes the initial master is hand done just one pair that the porter can put however much time in he chooses and then measured into the software and mirrored to get the other ports and it is saved for all eternity and exactly reproduced at will.
11-02-2007, 11:18 AM
#17
Maybe he recognizes that it is THE key to consistency and reasonable price. Not that quality CNC equipment is cheap, far from it, but to get anywhere vaguely close to the port to port consistency CNC offers, done by hand the portwer will have to go VERY slowly constantly measuring which will add up to a LOT of hours and a LOT of dollars and still not be anywhere near as consistent.
For a CNC port yes the initial master is hand done just one pair that the porter can put however much time in he chooses and then measured into the software and mirrored to get the other ports and it is saved for all eternity and exactly reproduced at will.
For a CNC port yes the initial master is hand done just one pair that the porter can put however much time in he chooses and then measured into the software and mirrored to get the other ports and it is saved for all eternity and exactly reproduced at will.
There are alot of people that come on this site that throw terms around and dont really know if its right or what it means. Thats what I was trying to figure here 
Thanks for ruining it 
If consistency won races then the race cars of the world wouldn't need handporting. There must be some reason hand ports are still the preferred choice.
11-02-2007, 11:44 AM
#18
Full race port jobs are really expensive. A typical set of Super Stock heads will cost $6,000.00+ to fix. I pay almost $2,000.00 to get stock unported heads blueprinted. It alll depends what your budget is and what you expect from your motor.
11-02-2007, 11:58 AM
#19
IGNORANCE and cheap buyin are the reasons hand porting is most common.
In highend racing CNC is the choice despite what hand porters will tell you.
I use CNC equipment, and even on simpler stuff needing less precision it is a wonderful addition to our shop. Cut 1 or 1000 pieces exactly the same, we made do fine by hand but the CNC has increased quality and productivity.
Those who tell you CNC is less than the best option do so based on two reasons, one being job security, the other being they can't come up with the coin to buy one of their own.
Not going to CC a 190cc advertized port and find it to be 10+ CCs off advertized like you will some hand porters work.
In highend racing CNC is the choice despite what hand porters will tell you.
I use CNC equipment, and even on simpler stuff needing less precision it is a wonderful addition to our shop. Cut 1 or 1000 pieces exactly the same, we made do fine by hand but the CNC has increased quality and productivity.
Those who tell you CNC is less than the best option do so based on two reasons, one being job security, the other being they can't come up with the coin to buy one of their own.
Not going to CC a 190cc advertized port and find it to be 10+ CCs off advertized like you will some hand porters work.
11-02-2007, 12:12 PM
#20
In highend racing CNC is the choice despite what hand porters will tell you.
I use CNC equipment, and even on simpler stuff needing less precision it is a wonderful addition to our shop. Cut 1 or 1000 pieces exactly the same, we made do fine by hand but the CNC has increased quality and productivity.
Those who tell you CNC is less than the best option do so based on two reasons, one being job security, the other being they can't come up with the coin to buy one of their own.
Not going to CC a 190cc advertized port and find it to be 10+ CCs off advertized like you will some hand porters work.