Hey hyde.... I bet that 2387 won't hold a candle to that motor of yours at dads house
Just don't tell worm I said that 
He will show me where the cow ate the cabbage and left the stalk
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| CNC ported heads vs custom ported heads http://www.woodsbuggy.com/phpBB3/viewtopic.php?f=3&t=11969 |
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| Author: | The man [ Tue Jul 05, 2011 10:20 pm ] |
| Post subject: | CNC ported heads vs custom ported heads |
c n c ported heads vs custom ported heads. How much of a defference and how much power will someone gain with either or. |
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| Author: | The man [ Tue Jul 05, 2011 10:38 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
I have a set of street elimanator heads that has been cnc ported and I am wondering how much more I can get out of them. I know a man that just put some on his buggy that had been ported so much you can drop eggs through the ports. It made his motor unreal now. He is running a web cam and I am running a vz15 both are running 1.1 rockers, he is running a 86 crank and I am running a 90. What I am wondering is if I put 1.3 pauter rockers and have the heads ported out the tale will this give me alot more power than what I have now because wormmys 2387 will eat my 2500 right now |
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| Author: | Aaron Creech [ Wed Jul 06, 2011 12:04 am ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
Put a bigger cam in that monster and let it breathe! Huge ports kill velocity and low end torque then you have to band aid it by running a tiny camshaft.In my opinion running ratio rockers on a VZ series cam is asking for trouble.I love Webcam cams.If I were building an engine of this size for myself or a customer I would install an 86a or 86b depending on heads and carbs.Both of these cams will require the use of at least a 1.4 ratio rocker. |
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| Author: | RaceBugg1098 [ Wed Jul 06, 2011 12:04 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
Heads can make all the difference in the world! |
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| Author: | Odyknuck [ Wed Jul 06, 2011 3:31 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
HP is in the heads. The caveat is a good hand porter can realyy bring it out. Abad hand port can make the motor a dog and have less HP than stock heads. Hogging material out is not the way to go with a VW head. Its where you remove the material from that counts. |
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| Author: | jon williams [ Wed Jul 06, 2011 3:46 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
Hey hyde.... I bet that 2387 won't hold a candle to that motor of yours at dads house Just don't tell worm I said that He will show me where the cow ate the cabbage and left the stalk
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| Author: | davehix [ Wed Jul 06, 2011 4:08 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
i think this guy knows a lil about hp! http://vwracingnews.com/forums/showthread.php?t=293 Aaron Creech wrote: Put a bigger cam in that monster and let it breathe! Huge ports kill velocity and low end torque then you have to band aid it by running a tiny camshaft.In my opinion running ratio rockers on a VZ series cam is asking for trouble.I love Webcam cams.If I were building an engine of this size for myself or a customer I would install an 86a or 86b depending on heads and carbs.Both of these cams will require the use of at least a 1.4 ratio rocker.
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| Author: | Aaron Creech [ Wed Jul 06, 2011 7:22 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
If the heads you have are CB Performance CNC ports those should be good for damn close to 200HP right out of the box if the rest of the combo is up to task.Bigger IS NOT better for a buggy motor.And no matter how good the heads are,the cam is what lets the air and fuel in.BTW Thanks Dave! |
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| Author: | tw9294 [ Wed Jul 06, 2011 8:26 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
Sorry to get off topic but out of curiousity just what kind of time slips does that pro mod bug of yours produce. Car is very nice too! And i,m no bug engine builder but as a kid i went to the track with a couple of guys older than me that raced bugs for years and in the mid 80s they had an all steel bug that ran low 12s with an 1835 with 40dcns? i think? with stock heads ported by themselves. they were low buck racers and had to do all of it themselves. later moving to a dragster and 48 webers they were flirting with 10 flat. |
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| Author: | kevin f [ Wed Jul 06, 2011 8:40 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
Never run ratio rockers on a vz cam. |
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| Author: | Aaron Creech [ Wed Jul 06, 2011 8:49 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
TW,The best numbers ever were 5.58 @ 129mph 1/8th mile and 9.09 @ 147mph in the quarter.I miss that car but the new one will be in the 7's!BTW were those guys names Lentz and Spencer? |
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| Author: | tw9294 [ Wed Jul 06, 2011 8:59 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
[BTW were those guys names Lentz and Spencer?[/quote] Yes they are! They are 25 yrs my senior but they use to take me to the track when i was kid. they have that old sedan back and are racing it again but maybe you know that
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| Author: | ridenrace6 [ Thu Jul 07, 2011 12:17 am ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
take a look at this thread http://www.woodsbuggy.com/index.php?opt ... 51&p=92196 |
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| Author: | Baddvw [ Thu Jul 07, 2011 8:03 am ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
I would send the stock S/E heads to a well-known VW engine builder and have them to port the heads and the manifolds to match to your specs you want by telling them what kind of performance you want, what size motor you are running, what carbs, what cam, what the buggy weights, etc., etc... That is what I did and I have a killer 2500cc motor now  CB Performance makes good parts, don't get me wrong, they make parts mostly for drag racing is because that is what Pat Downs does for a living and plays by on the weekends, I personally think the CNC ported heads will be opened up too much for a woodsbuggy IMO, I am all about torque and a very wide powerband, I don't hardly ever let my motor run more than 6,000 rpm and it is plenty for me with my tall gear and I can easily blow the tires out with a 3.10 first gear and sometimes in second gear on a hill.
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| Author: | The man [ Fri Jul 08, 2011 9:09 am ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
Hey Jon I hear you about that motor at your dads. I am just letting wormmy have his moment of glory. If it gets to deep I will break that motor out. Your dad knows our little secret about what is in that thing. We just want let wormmy know. |
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| Author: | kevin f [ Fri Jul 08, 2011 8:16 pm ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
The man wrote: Hey Jon I hear you about that motor at your dads. I am just letting wormmy have his moment of glory. If it gets to deep I will break that motor out. Your dad knows our little secret about what is in that thing. We just want let wormmy know. I bet them single port heads on that new motor is bad ass.
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| Author: | ridenrace6 [ Sat Jul 09, 2011 4:47 am ] |
| Post subject: | Re: CNC ported heads vs custom ported heads |
kevin f wrote: The man wrote: Hey Jon I hear you about that motor at your dads. I am just letting wormmy have his moment of glory. If it gets to deep I will break that motor out. Your dad knows our little secret about what is in that thing. We just want let wormmy know. I bet them single port heads on that new motor is bad ass. we did a little secret weapon work on hydes 1 seater up at tools tonight i think wormy is going to be chewing on some left over cabbage stalks at fultondale, oh never mind he wont never make it there, i guess he will just have to ride the back of the bus at hulseyville 
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