trust anyone to port and polish?
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From: Cincinnati, Ohio
trust anyone to port and polish?
I plan on getting the head done in the next few months. Should I send the head away or trust anyone local for a basic 3 angle valve job.
Anyone dealt with certain shops leaving you with good or bad impressions?
Anyone dealt with certain shops leaving you with good or bad impressions?
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From: assville, MI, USA
Re: trust anyone to port and polish? (1 2 NV)
3 angle valve job can be done by most shops with the right tools.
I wouldn't trust P&Ping the head to anyone though, I would send it out.
I wouldn't trust P&Ping the head to anyone though, I would send it out.
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From: Texas Damnit
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From: assville, MI, USA
Re: (DavidR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DavidR »</TD></TR><TR><TD CLASS="quote">http://www.endynracingengines.com</TD></TR></TABLE>
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From: LOS ANGELES, CA
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From: North San Jose, Ca
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From: houston, tx, usa
Re: (DefiantGSR)
Ive had alot of work done by http://www.pyrracing.com in the past and also have had work done by Inline Racing here in houston...but have been porting my own heads for the last few years with similar results as other ported heads.
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From: socal, Ca, USA
Re: trust anyone to port and polish? (DOHC hatch ej)
speak to paulus lee at AEBShttp://www.aebsracing.com.badass head porter.
at AEBShttp://www.aebsracing.com.badass head porter.
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From: Texas Damnit
Re: (DefiantGSR)
Alaniz and portflow, ehh, both cut exhaust valve guides off, big NONO for reliability. (at least the used to).
PYR? Haha. RUN AWAY!
Your own work? Show me some results, your head vs someone else's (same engine, same day, just different head)? w/o a flowbench and lots of knowledge and experience, you are pissing in the wind. Send it off to someone with experience.
PYR? Haha. RUN AWAY!
Your own work? Show me some results, your head vs someone else's (same engine, same day, just different head)? w/o a flowbench and lots of knowledge and experience, you are pissing in the wind. Send it off to someone with experience.
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From: houston, tx, usa
Re: (DavidR)
cutting away valve guides is what alot of headporters o increase power..and PYR has done alot of work for alot of people and they do excellent work....have you ever ported a head
?Ive been porting my own head since 2001 and have had simliar hp results compared to all of the hads ive had done by other people in the past.I havent had them flow benched though,but what does that matter if they put out the same if not better power and timeslips as other heads?I do have pics of my heads,and have a plenty of satisfied customers.Go here for pics of my ports...i dont have any comparing them to other heads though.http://www.houston-imports.com...84288..and i do have tons of experience and alot of knowledge..i spent a few years just studying other heads and other port jobs before i even attempted to port a head.Ive run a consistant high 13 in a crx w/ an ls swap..just my ported ls head and an intake a chipped ecu and open header....on street tires.Unless you port heads and have the experience or you plan on doing business with me than i dont even know why me or any other head porter should have to explain anything to you or give you any proof.
?Ive been porting my own head since 2001 and have had simliar hp results compared to all of the hads ive had done by other people in the past.I havent had them flow benched though,but what does that matter if they put out the same if not better power and timeslips as other heads?I do have pics of my heads,and have a plenty of satisfied customers.Go here for pics of my ports...i dont have any comparing them to other heads though.http://www.houston-imports.com...84288..and i do have tons of experience and alot of knowledge..i spent a few years just studying other heads and other port jobs before i even attempted to port a head.Ive run a consistant high 13 in a crx w/ an ls swap..just my ported ls head and an intake a chipped ecu and open header....on street tires.Unless you port heads and have the experience or you plan on doing business with me than i dont even know why me or any other head porter should have to explain anything to you or give you any proof.
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From: Texas Damnit
Re: (JDMotive)
You aren't a very good business man, but most here aren't at H-T with short fuses and big egos. If you are comparing your own work to your own work, then I hope it doesnt get any worse, right? Lets see you compare it to AEBS, or RLZ, or Endyn? Flow is what the head is all about, and without hours on a flowbench, with trial and error, how are you going to know where to remove material, and where not to...simlpe, you can't know. 13 seconds ina CRX with a B18b isn't that hard, I mean it was a stripped car, so it probably weighed 1700lbs?
Ohh, and the reason they cut the guides is yes, to get flow, but also because they are LAZY. In order to port behind them, it either takes a really long time, you remove them, or just wack them off. Not only are the exhaust valve guides in the B series head the weak point of the entire head, meaning the wear first, but they also provide a path for the heat, from the exhaust valves to the head to be taken away by the oil and water flowing through it. If you cut them off, you remove surface area and the valve stays hotter, which leads to a number of things, one being burt valves. Also, without the extra guide in there, at very high RPMs, the valves have less to keep them in line (hence it is called a valve guide), and they can move around a bit, increasing the possibility of touching each other, or wearing out the valve seats.
Next?
Ohh, and the reason they cut the guides is yes, to get flow, but also because they are LAZY. In order to port behind them, it either takes a really long time, you remove them, or just wack them off. Not only are the exhaust valve guides in the B series head the weak point of the entire head, meaning the wear first, but they also provide a path for the heat, from the exhaust valves to the head to be taken away by the oil and water flowing through it. If you cut them off, you remove surface area and the valve stays hotter, which leads to a number of things, one being burt valves. Also, without the extra guide in there, at very high RPMs, the valves have less to keep them in line (hence it is called a valve guide), and they can move around a bit, increasing the possibility of touching each other, or wearing out the valve seats.
Next?
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From: TX
Re: (GOLDBERG)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GOLDBERG »</TD></TR><TR><TD CLASS="quote">ugh..who fu**in cares man, jeez </TD></TR></TABLE>
If its your head, I would sure hope you have the brains to care
If its your head, I would sure hope you have the brains to care
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From: TX
Re: (JDMotive)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMotive »</TD></TR><TR><TD CLASS="quote">stupid people make me laugh </TD></TR></TABLE>
the only stupid people i see are those who dont accept the truth
</TD></TR></TABLE>the only stupid people i see are those who dont accept the truth
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From: North San Jose, Ca
Re: (DavidR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DavidR »</TD></TR><TR><TD CLASS="quote">
Ohh, and the reason they cut the guides is yes, to get flow, but also because they are LAZY. In order to port behind them, it either takes a really long time, you remove them, or just wack them off. Not only are the exhaust valve guides in the B series head the weak point of the entire head, meaning the wear first, but they also provide a path for the heat, from the exhaust valves to the head to be taken away by the oil and water flowing through it. If you cut them off, you remove surface area and the valve stays hotter, which leads to a number of things, one being burt valves. Also, without the extra guide in there, at very high RPMs, the valves have less to keep them in line (hence it is called a valve guide), and they can move around a bit, increasing the possibility of touching each other, or wearing out the valve seats.
Next?</TD></TR></TABLE>
im sure a big reason they cut the guides is b/c they're lazy but it does increase flow..and by the looks of it...it doesn't affect reliability of the guide or valve. the intake guide is shorter than the exhaust guide...look in this thread, someone has had a cut guide for ~40,000 miles with no ill effects...
https://honda-tech.com/zerothread?id=96960
Ohh, and the reason they cut the guides is yes, to get flow, but also because they are LAZY. In order to port behind them, it either takes a really long time, you remove them, or just wack them off. Not only are the exhaust valve guides in the B series head the weak point of the entire head, meaning the wear first, but they also provide a path for the heat, from the exhaust valves to the head to be taken away by the oil and water flowing through it. If you cut them off, you remove surface area and the valve stays hotter, which leads to a number of things, one being burt valves. Also, without the extra guide in there, at very high RPMs, the valves have less to keep them in line (hence it is called a valve guide), and they can move around a bit, increasing the possibility of touching each other, or wearing out the valve seats.
Next?</TD></TR></TABLE>
im sure a big reason they cut the guides is b/c they're lazy but it does increase flow..and by the looks of it...it doesn't affect reliability of the guide or valve. the intake guide is shorter than the exhaust guide...look in this thread, someone has had a cut guide for ~40,000 miles with no ill effects...
https://honda-tech.com/zerothread?id=96960
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From: Texas Damnit
Re: (DefiantGSR)
At .5" lift, my Alaniz head measured 322 CFM on the intake and 265.3 on the exhaust.
Same lift on the same head, after touched by Endyn was: 331 and 328.
With the old setup, B20VTEC, Rollerwaves 12.5:1, long rods, CTR cams, ITR intake and JDM 4-1, I made a respectable 200hp, 153ft/lbs. I can't wait to put that combo back together, only with the Endyn touched head. I have been told by a friend that does V8 heads, the new head should way outperform the old way it was done, as he has seen both.
Disclaimer: Take what I say for what it is worth. My words come from my experiences and learnings. I am by no means the smartest person on the planet, nor am I an physics major.
Same lift on the same head, after touched by Endyn was: 331 and 328.
With the old setup, B20VTEC, Rollerwaves 12.5:1, long rods, CTR cams, ITR intake and JDM 4-1, I made a respectable 200hp, 153ft/lbs. I can't wait to put that combo back together, only with the Endyn touched head. I have been told by a friend that does V8 heads, the new head should way outperform the old way it was done, as he has seen both.
Disclaimer: Take what I say for what it is worth. My words come from my experiences and learnings. I am by no means the smartest person on the planet, nor am I an physics major.
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From: North San Jose, Ca
Re: (DavidR)
what was the lift at .4 and .45?
numbers seem low for a b20vtec and your setup.
as a lot of people know, flow charts dont mean everything. anyone can port a hole in the head to flow a million cfm. not directly implying anything to you davidR..
numbers seem low for a b20vtec and your setup.
as a lot of people know, flow charts dont mean everything. anyone can port a hole in the head to flow a million cfm. not directly implying anything to you davidR..
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From: Texas Damnit
Re: (DefiantGSR)
Alaniz
Intake: 289.9 315.8
Exhaust: 266 266
Endyn: Larry has asked me not to post the whole chart. He gained me similar to that of the .5 number, percentage wise.
The head is where the problem was. Even with cut exahust valve guides, the port was just so Tiny! I even told Joe what my goal was, and he still gave me a Mini sized port.
Intake: 289.9 315.8
Exhaust: 266 266
Endyn: Larry has asked me not to post the whole chart. He gained me similar to that of the .5 number, percentage wise.
The head is where the problem was. Even with cut exahust valve guides, the port was just so Tiny! I even told Joe what my goal was, and he still gave me a Mini sized port.
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From: North San Jose, Ca
Re: (DavidR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DavidR »</TD></TR><TR><TD CLASS="quote">Alaniz
Intake: 289.9 315.8
Exhaust: 266 266
Endyn: Larry has asked me not to post the whole chart. He gained me similar to that of the .5 number, percentage wise.
The head is where the problem was. Even with cut exahust valve guides, the port was just so Tiny! I even told Joe what my goal was, and he still gave me a Mini sized port. </TD></TR></TABLE>
i've gotten that impression from larry as well. he does his head according to the person's whole setup. great attention to detail...
Intake: 289.9 315.8
Exhaust: 266 266
Endyn: Larry has asked me not to post the whole chart. He gained me similar to that of the .5 number, percentage wise.
The head is where the problem was. Even with cut exahust valve guides, the port was just so Tiny! I even told Joe what my goal was, and he still gave me a Mini sized port. </TD></TR></TABLE>
i've gotten that impression from larry as well. he does his head according to the person's whole setup. great attention to detail...
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From: houston, tx, usa
Re: (BryanPendleton)
I wasnt trying to start anything with anyone,i just said who ive had good head porting experiences with and stated that i now port my own heads.Do you think the first few heads endyn or alaniz ported were record breaking heads?Nope..it takes experience,which is what im gaining by doing my own heads,and ive had no complaints about my heads so far,which must mean im on the right track.Dont hate because im porting my own heads,i do appreciate suggestions and constructive crtisizm though.So anyone who followed th link i made earlier,please im me with comments if you feel,as it will only make me better.Thanks.
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From: TX
Re: (DefiantGSR)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DefiantGSR »</TD></TR><TR><TD CLASS="quote">
im sure a big reason they cut the guides is b/c they're lazy but it does increase flow..and by the looks of it...it doesn't affect reliability of the guide or valve. the intake guide is shorter than the exhaust guide...look in this thread, someone has had a cut guide for ~40,000 miles with no ill effects...
https://honda-tech.com/zerothread?id=96960</TD></TR></TABLE>
This proves that his car has 40k miles on it. Other than that, that is about it. What kind of valve clearances are there? Valve wear and seal wear? And depending on the application (ie. forced induction) thermal management is a large concern and there have been no tests to document the loss in heat transfer.
im sure a big reason they cut the guides is b/c they're lazy but it does increase flow..and by the looks of it...it doesn't affect reliability of the guide or valve. the intake guide is shorter than the exhaust guide...look in this thread, someone has had a cut guide for ~40,000 miles with no ill effects...
https://honda-tech.com/zerothread?id=96960</TD></TR></TABLE>
This proves that his car has 40k miles on it. Other than that, that is about it. What kind of valve clearances are there? Valve wear and seal wear? And depending on the application (ie. forced induction) thermal management is a large concern and there have been no tests to document the loss in heat transfer.