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Post by Wahoo650 on Sept 6, 2004 5:41:52 GMT -5
Great! Now I have one more thing to add to the list of this winter's projects! I am planning on pulling my head anyway (oil leak around jug and cam chain guide starting to loose chunks of the plastic).
Looks good Jack, I'm looking forward to the pictures. Thanks for the stats, as they say "The proofs in the pudding"!
Matt
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Post by 50gary on Sept 6, 2004 6:43:49 GMT -5
Very good Jack, can't wait for some photos. I wonder how far off my porting is, having never put the head on the flow bench? BTW, did Diesel join the science project? Keep up the good work. Cheers, 50gary
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Post by LarryBart on Sept 9, 2004 5:07:15 GMT -5
Don"t be too hard on yourself, the text and pictures you posted are the first I have seen from members doing this work to there heads. True you may not see an immediate response to your posting but when you least expect it someone looking for porting information will start asking questions. The photo's are great and it would do you and the board a disservice to delete then. Give it some time as a lot of folks are squeezing every hour into riding just now before the weather goes South for them including myself. Sometimes the folks are a little slow on the uptake, wait until winter rolls around and you will have traffic.If you leave them up for any reason at all I like them and learned a lot, that is what we are all about shareing information. Thanks for the effort.
Best Regards LarryBart
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Post by Diesel on Sept 9, 2004 6:41:52 GMT -5
Jack - sorry I missed the session of fun and thanks for posting the pics and results. The intake ports look really nice (like mine  ). Did you try a little clay to fill in the dead pocket area aft of the intake valve guide and along the roof? I was wondering how much of an effect that would have on smoothing air flow. |
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Post by Polamnus on Sept 9, 2004 6:46:27 GMT -5
Jack, don't take 'em down. Every little tidbit of info is worthwhile, especially since your testing was so succesful.
I hate to speak for anyone else, but I don't think I'd be making too much of assumption in saying this is a decidedly advanced thing to do. Many, like me, are just trying to solve oil leaks or keep brakes from squealing. Porting my head is interesting to think about, but the reality is that most people will never get into their engines this far.
By the same token, that means that there *are* some people around here who will find this immediately useful. Some people will decide to go down this road in the future, and some folks who aren't even members may find it useful someday too.
Short answer, I agree with LarryBart, it'd be a disservice to remove the info. Don't take a lack of response as dis-interest. I for one, would have absolutely nothing constructive or otherwise to add, but rest assured I've been following along.
Best,
Pol
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Post by steve78650 on Sept 9, 2004 9:23:53 GMT -5
I agree also...Porting heads is way over my head (i've yet to take a top end apart) but I think it's sweet you're advanced enough to do this! When I get there someday, I'll use your info for sure!
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Post by hooktool on Sept 9, 2004 9:44:48 GMT -5
I for one have found it interesting AND useful. Just because folks don't post, doesnt mean they don't find it useful. I have found a lot of posts, some of them pretty old, that have been helpful to me. Thanks for doing it. John |
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Post by mental on Sept 9, 2004 11:42:43 GMT -5
Hey Jack,
I'm with the other guy's, leave the information up.
I found the information very interesting, but I am not in a position to put any of it into action at this time. At some future date, however, I will be wanting do some head porting.
I think that the reason that you have not had much in the way of response to your posts, is because it is a subject that most of us have little or no experience with. As a result, it's a little intimidating to comment on the subject.
Thanks for doing the work to bring us all up to speed on the art of head porting. I hope that you will change your mind and leave it on the board so that we all have the reference to look back on.
Mental
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Post by chopperbbad on Sept 9, 2004 14:15:58 GMT -5
Jack,
those are awsome pics and info. I am about to start to port & polish my second XS650 head and the info you posted is right up my alley (My XS650 garage is also in the alley).
rick
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Post by 50gary on Sept 9, 2004 22:11:39 GMT -5
Jack, don''t you dare take down the pictures! After all that work, it would be a shame. The head looks good to me from my limited scope of knowledge. BTW my computer CRASHED and I had some kind of fit getting back on line. The results speak for themselves, the flow percentages are way up from stock and really don't look to be too radical. Does your guy Bobby charge a lot for this about how much would this level of head prep cost?This would be an excellent street motor I'll bet? A couple of round slide carbs and a 2/1 header would make a very nice combo all without touching the lower end. Maybe a cam too? ... see there I go again. Cheers, 50gary
PS. Jack, can I send a XS650 Garage T-shirt to you to give to Bobby as a token gift of thanks? Let me know and I'll get one out right away. He looks like an XL?
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Post by 50gary on Sept 10, 2004 6:33:47 GMT -5
Thanks again, I'll send a T-shirt out ASAP. The reason I mentioned price is simply it sorta sounds as if some of the BB guys would like a nicely ported head but may lack the tools, knowledge/confidence to tackle the job. I think his prices sound very reasonable compared to the $1000. price I got from another shopl Cheers, 50gary
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Post by Diesel on Sept 10, 2004 11:03:31 GMT -5
I think his prices sound very reasonable compared to the $1000. price I got from another shop $1,000!!! Granted, time is money but all within reason. I invested over 80 hours in the last head I ported but I couldn't justify charging someone for that amount of time at the typical (in my area) $65/hour shop rate. That would be a $5,200 porting job!! Jack - thanks for keeping me in mind the next time you do some flow testing. |
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Phil
New Member
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Post by Phil on Sept 10, 2004 11:37:07 GMT -5
Jack, throw me on the list with the other guys cuz: a) my puter has been down, b) I need to tear down my engine to work on the left piston/pressure and was waiting till then to look at the head also, and c) I am waiting for winter (bad weather) to tear into her. Your data is and will be greatly appreciated. Thanks.
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Post by slide on Sept 12, 2004 10:48:57 GMT -5
Thanks for the information to date and keep us posted. It's a long cold winter here in Saskatchewan so I will likely be using your information.
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Post by Sparksfarmer on Sept 18, 2004 1:19:44 GMT -5
Hey Jack,
Thanks for all the hard work... I've been out of commision for the last month or so and am just now back to the website... I still have a head sitting on the back porch, but figure I'll try to understand as much as possible before I start grinding...
As far as trying to photograph the head, I think you did great... If your trying to get rid of the shiny reflection from the smoothed head, take a hankerchief and drape it over your light source... (Don't leave it too long over a halogon bulb). IF you can imagine the difference between a frosted lamp and a clear one. The clear one gives a lot of glare and makes most people squint. The frosted one gives out the same amount of light but with warmer tones..It is just as in photographing weddings, white dresses and chrome or mirrors... The hanky takes a lot of the glare out of the lightsource by changing the color and intensity... Also, like photographing people who are standing by a mirror, you need to be at such an angle that your light doesn't reflect back to the camera...
Keep up the good work and please feel free to post any information you may have... I'm sure we all would like to read about it and as someone said... Some people may not read it now, but when they have the head in their hand and are ready to start grinding.... Then they will be reading all that you wrote..
Thanks Again,
Bernie
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). Did you try a little clay to fill in the dead pocket area aft of the intake valve guide and along the roof? I was wondering how much of an effect that would have on smoothing air flow.
