Porting heads
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Joined: Oct 2006
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From: POULSBO WA.
Porting heads Hey guys heres a question...i have a spare motor from a 97 ws6 the motor has 52,000 on it. So i pulled the heads off and i want to do some home porting, gasket match the whole bit. I want to swap with my 93 heads until i get enough money to send them to do a LE2 setup. I have been told they can port '93' heads more than the rest, is this true? And how much extra power can i get porting and is it worth the work? One more i want to change the head gaskets from .050 to .028 i think it will give me 11 to 1 ratio is this to much for 182k? Thanks
More often than not home porting heads gets you nowhere or you end up with a ruined set of heads. There's far more to it than just gasket-matching and going nuts with a Dremel. It's not for the beginner, nor are the gains on a stock cam worth the risk. You're talking MAYBE a handful of HP, if that, even if done properly. Chances of that happening on your first go-around with home-porting are nil.
Leave the heads alone.
Leave the heads alone.
Thread Starter
TECH Fanatic
Joined: Oct 2006
Posts: 1,106
Likes: 0
From: POULSBO WA.
I do have books and videos and this is not truly my first go round, i was hoping to get 20-25 hp out of them. The 182k motor still pulls 13.5 @105 so it is still going strong. Just thought i would gain a little. Anybody know about the headgasket thickness is that correct at 11 to 1?
It can be done. But like Ramair said it's not for everyone and most screw it up. I spent about 30 hours researching before I ever even touched my heads, but it paid off and saved myself about $1000.
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Read, read, read. David Vizard knows his ****.
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Read, read, read. David Vizard knows his ****.
Don't ever let the bit stop while touching the head or start the bit while on the head. Also be very very careful when in the valve margen area. I also suggest haveing a valve job done afterwards your more likely than not to hit that area your first few times. If you get bits get a few diffrent lengths to make thing a little more easy to control the bit. Good luck
If I would have taken all the hours I spent porting my heads and put in overtime at work, I could have bought 2 sets of LE2's or one set of CNC'd heads. And would have way better results. I had mine flowed, but I haven't put the motor in yet, so we'll see what the dyno and track times say about the port job. One day....maybe....hopefully.
I don't regret doing the home port job....yet anyway. I had fun and it was good experience. Just plan on spending 40+ hours if you're trying to get to >195cc and have them all match, etc, etc.
I've been having an experimental set of 561 castings that have been in my garage for a few weeks and I just can't bring myself to start all over again. I don't know how some guys do it on a daily basis and stay motivated.
I don't regret doing the home port job....yet anyway. I had fun and it was good experience. Just plan on spending 40+ hours if you're trying to get to >195cc and have them all match, etc, etc.
I've been having an experimental set of 561 castings that have been in my garage for a few weeks and I just can't bring myself to start all over again. I don't know how some guys do it on a daily basis and stay motivated.