Port and polish

William · Posted: Fri Dec 01, 2006 4:57 pm Post subject: Port and polish

What do you guys think about port and polish? Vortex is all over the place on the matter, I know what I want to gain out of this but I am just looking for varied input - good, bad, worth your time, etc. I am trying to keep my motor NA and get the most out of it, then possible upgrade. Thanks for your imput in advance. Confused

Alice · Posted: Fri Dec 01, 2006 4:57 pm Post subject:

What is the difficulty?
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corroco · Posted: Fri Dec 01, 2006 5:34 pm Post subject:

dont waste your time 0n 5 to8 hp get a bigger engine geek

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whiteriot · Posted: Fri Dec 01, 2006 6:01 pm Post subject:

if it's an 8v head and you want it to flow better just forget it and get a 16v instead. plenty of people will say to keep the 8v but i ditched mine and haven't looked back now that i have a valver and the power potential much higher with a 16v then it is an 8v. The swap isn't too bad at all either and can run on your cis just make sure you get any vacuum leaks, have correct timing, and have a working idle stablilizer or you'll go mental with a car that doesn't idle worth a damn. my 2 cents.

nimbusgti · Posted: Fri Dec 01, 2006 6:44 pm Post subject:

Are you dissing the 8 valve. I take great offence to that. I am going to get my ABA head ported and polished. I also run 20psi through it though.

whiteriot · Posted: Fri Dec 01, 2006 6:59 pm Post subject:

nimbusgti · Posted: Fri Dec 01, 2006 7:00 pm Post subject:

I kid I kid.

whiteriot · Posted: Fri Dec 01, 2006 7:35 pm Post subject:

William · Posted: Fri Dec 01, 2006 8:49 pm Post subject:

I compare 8V to 16V all the time. 16V does allow for more, but rarely when a person spins up an 8V do you ever hear of breakage; 16v on the other hand with its tiny valves, etc tend to fail sooner. Am I right or wrong? I am trying to create a street car (light to light if you'd say), not highway. I have heard from those who drive G60s that the JH holds it own until the G60 charger kicks. rabbit

oh ... and to

nimbusgti · Posted: Fri Dec 01, 2006 9:20 pm Post subject:

16v's don't fail sooner. You just have to the belt every 90000 km's. For some reason the 16v has a bad rep for bending for being unreiable. I used to have a Jetta 16v for a few years. It had over 350000 km's on the original engine. I reved the crap out of that thing at least five times a week. I never had a issue. Firestarter has also beat on his 16v and never had any issues. It is all about maintenance.

joshisapunk · Posted: Sat Dec 02, 2006 2:21 am Post subject:

i can also vouch for the 16v. I ran about 5 bottles of nitrous through my 200,000 km 16v in 100hp shots this summer and my compression is still spot on, and the car is driven 365 days a year. I also change my oil every 2000km Wink

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vr6t · Posted: Sat Dec 02, 2006 10:35 am Post subject:

joshisapunk · Posted: Sat Dec 02, 2006 11:18 am Post subject:

a wet kit i bought off bill with a single fogger plumbed into my intake...not sure of the part number but it is NOS brand
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DIGGY16VALVE · Posted: Sat Dec 02, 2006 7:03 pm Post subject:

16v's are very reliable I give 1.8t's a run for there money even on a roll on, a N/A 8v would not even have a chance

16v passats on the other hand are not so reliable but thats not the motor just their crappy fuel system. I think thats where 16v's got a bad rep

corroco · Posted: Sat Dec 02, 2006 7:43 pm Post subject:

vwmechanic · Posted: Sat Dec 02, 2006 8:00 pm Post subject:

DIGGY16VALVE · Posted: Sat Dec 02, 2006 8:06 pm Post subject:

alot of 8v came with plasyic flanges as well thats just matanence

on a nother note a stock 16v head flows more than a VR6!

William · Posted: Sat Dec 02, 2006 10:45 pm Post subject:

Well after the commercial break back to the original question. 8V , 16V , VR6, W12 , whatever; my question is does anyone feel that a port and polish will result in gains? Whether I stay with the 8V or a V8 is irrelevent to what I am asking.

Oh and as far as maintenace an 8V belt should be done at a similar interval of 90,000 km; yet I have changed my belt on my first rabbit (same setup) at a mere say 30,000 km. When this belt was changed the cogs on the belt were shear enough to shave with, a razors edge that should have failed long ago. I agree with the maintenance part of this post but I beat my 8V at every light not only a few times a week. rabbit

DIGGY16VALVE · Posted: Sun Dec 03, 2006 12:22 pm Post subject:

than yes a port and polish will result in gains. but you will still get molested off the light by a stock 16v

Firestarter · Posted: Mon Dec 04, 2006 9:00 pm Post subject:

Port and polish on a counterflow 8 valve head will not be a great value! it will cost you at least $300. if a "buddy" sais they can port and polish a head I agree they could hog out the intake and exhaust ports but preobably cant flow test it! in my opinion it is not worth doing unless you get a steel of a deal ($50) or buy a used wet nitrous kit and have alot more fun!
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SpeedTek · Posted: Tue Dec 05, 2006 11:15 am Post subject:

whiteriot · Posted: Tue Dec 05, 2006 1:41 pm Post subject:

SpeedTek · Posted: Tue Dec 05, 2006 2:57 pm Post subject:

This (first kit)
http://www.autotech.com/prod_engine_engkit.htm

plus a shaved head, 272 cam, HD springs, titanium retainers, header, 2.25 exhaust. No dyno yet, but should be good for 160 at the crank on CIS.
I know it's not the end all be all, but I've walked VR6's with this car the way it's set up. Going to a 16V head would mean a big drop in CR for this engine, the only way I'd consider the extra work retro-fitting one would be if I turbo'd it. Which will be a few years off given the current budget...LOL
Firestarter knows my car, he's heard it run.

I wasn't trying to start a fight was merely bringing forward an article I had read by a (supposedly) knowledgeable source. Given that the guy used to work for Drake and the article was probably written some time ago, I would think there may have been other motives to writing these things (to sell more Drake 16V heads maybe?). Although, that being said, it wouldn't be the first time I have heard that 16V engines weren't that great. One particular tuner here in Saskatchewan who is a heavy hitter in the scene (no I won't mention names, he may not appreciate me quoting him on this) has referred to turbo'd 16V's as "grenades" and says he wouldn't waste his money on one.

I personally have nothing against 16V's, but for the time being I have my 8V and it is an eye-opener for a lot of guys that have run against me. thumright

BTW, you're absolutely right that a 16v has better flow than an 8V which is exactly why porting and polishing an 8V head is a good idea. More flow=more power.
It's all good....as my buddy 'Miah always tells me (shaking his head) "you 8V guys....always got something to prove" Rolling on floor laughing

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whiteriot · Posted: Tue Dec 05, 2006 5:22 pm Post subject:

SpeedTek · Posted: Tue Dec 05, 2006 6:55 pm Post subject:

counterflow is where it's at.......OLD SKOOL FTW!!

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