brendasue555
Expert Class
Posts: 436
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posted November 21, 2008 11:13 AM
RLM ?
Do any of you guys in Texas have any suggestions on where to take my head? Robbie at RLM in San Antonio is the only person that I know of. Have any of you ever used him or heard of him? Thanks for any input!.........................brenda
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Brenda
  
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entropy
Moderator
Posts: 8671
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posted November 21, 2008 11:39 AM
Brenda,
does it need welding or just some new seats & valves??
For local work I use Metric in Houston, Andy has a fancy head machine for seats & valves and a milling machine to skim the head afterwards. He does very, VERY careful work, i trust him 110%.
I go there about every weekend for dyno tests; going today in an hour or so.
Karl
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brendasue555
Expert Class
Posts: 436
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posted November 21, 2008 11:51 AM
Gosh Karl I wish I was going with you becasue I sure do want to go to the bike show. Would you do me a favor please. The folder that I found Dougs name penciled on that my bike title was given to me in had some other things on it as well. And Metric was one of the things. I think that they have maybe freshened the head before. If you know them well enough could you please do me the favor of picking their brain to see if they could shed any light on where all the extrra parts that doug sold with the bike went to. I know that it is a long shot but maybe they would know something. I am sure that they qwould remember the bike and might have some insight on where the guy that I bought it froms head was at. Any info they have would be so appreciatted. let me know ok. my cell is 210-859-8213.
thanks so much
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Brenda
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TRNorBRN6001
Needs a job
Posts: 2021
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posted November 21, 2008 11:52 AM
Just sent my ZX-12 head to Andy. It'll need to get built up a little between the exhaust seats and at least 6 new seats. N20 got happy leaving the chamber. The head should be there by Saturday, ask Andy if you would like to look at it................and put a good word in for me Karl.
If you have to ship it to someone, don't hesitate especially if Mr. Meyer recomends an individual. It was only like $25 to ship my head to Houston with $1800 worth of
insurance on it as well.
Gary
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entropy
Moderator
Posts: 8671
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posted November 21, 2008 11:58 AM
Brenda,
i'll ask Andy about yr ZX11 head and parts. What is the name of the guy who sent it to him?
Gary,
good to see you getting after it!!
Karl
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brendasue555
Expert Class
Posts: 436
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posted November 21, 2008 12:15 PM
Gary,
Thanks for that bit of info. Great to know!
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Brenda
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dougmeyer
Needs a job
moderated
Posts: 2713
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posted November 21, 2008 04:46 PM
The head is going to need some welding and seats.
I used to buy Cosworth pistons from a company called R.E.S. (Racing Engine Services)
anybody remember them?
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TRNorBRN6001
Needs a job
Posts: 2021
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posted November 21, 2008 07:45 PM
I have seen a RES ported Busa head a couple weeks ago, Never heard of them till then. If you would like to wait and see the before and after on my head from the work Andy does, I am more than happy to post pics. I do believe my head will need to be welded/built up a bit between the exhaust seats and replace six of the eight seats as well. Plus I'll PM you what he charged after it was all said and done.
A couple pics for you:
After I cleaned it up a little bit:
Bonus pic of Valve running a little on the hot side:
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VincentHill
Needs a life
Posts: 6520
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posted November 22, 2008 05:48 AM
I HAVE seen a LOT worse!! Some or all Guides may need to be replaced and some combustion chamber work! The Seats first need to be cut and then see where you are if they need replacement! You are fortunate that the engine let go at Idle (ir near Idle)
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entropy
Moderator
Posts: 8671
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posted November 22, 2008 06:24 AM
quote:
I HAVE seen a LOT worse!! Some or all Guides may need to be replaced and some combustion chamber work! The Seats first need to be cut and then see where you are if they need replacement! You are fortunate that the engine let go at Idle (ir near Idle)
VH,
that head is gary's and it sure didn't let go at idle... 
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gixxre750
Novice Class
Posts: 42
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posted November 22, 2008 07:46 AM
RLM co does great work and is the best around hands down. Has built more bar bikes than anyone else in TX and has been doing it longer than anyone else. Downfall is turnaround time. Depending on how busy he is, it may take awhile. RLM not only does engine wk, but is by far the best fabricator I have ever seen. I have known Robbie since the lates 80's and he has become a great friend of the family. I have also heard Andy @ metric does good wk also but have never used him
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SteddyTeddy
Pro
Posts: 1664
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posted November 22, 2008 09:50 AM
Damn that head is toast. May be cheaper to start with another. Bad NOS mix cause that?
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KZScott
Needs a life
high on speed
Posts: 7235
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posted November 22, 2008 01:22 PM
quote:
quote:
I HAVE seen a LOT worse!! Some or all Guides may need to be replaced and some combustion chamber work! The Seats first need to be cut and then see where you are if they need replacement! You are fortunate that the engine let go at Idle (ir near Idle)
VH,
that head is gary's and it sure didn't let go at idle...
more like 180mph?
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00 ZX-12R 8.62 @ 165.2 no bars, slicks, Pump Gas, 55 shot.... turbo 8.32 @173
00 ZX-12R Fastest NA Kawasaki in the world 1: 222.046 1.5: 226.390 Loring AFB
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TRNorBRN6001
Needs a job
Posts: 2021
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posted November 22, 2008 06:56 PM
Yep, a little bad N2O juju! Don't know about 180mph, but I was at the top of 4th and started in 5th for a second when things let go. I was geared 19/42 with OD gears. Mr. Hill will know how fast that would be.
I 'll post pics for you when I get it back.
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Texas12R
Zone Head
Posts: 545
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posted November 23, 2008 05:34 AM
if someone has info on welding proceedure, I would like to have that.
Im going to take a guess and say that the head could be placed in an oven and pre-heated to 400 degrees.....then using 4043 build the damaged area back. I think it would be helpful to planish that welded area also.....
I have seen several threads about heads that need welding.....I would do the job for free
If I could get a proceedure that ensures the integrity on the head ( I.E. no warping).
The problem I have had getting the info ....It seems to be proprietary. I cant get anyone
to tell me anything
Or maybe the welding part is cheap and offering to weld for nothing is a moot point.
at any rate.....I am at your service.....if you can get me info, to help you.
Michael......
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entropy
Moderator
Posts: 8671
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posted November 23, 2008 05:58 AM
Michael,
integrity of the welding procedure is Andy's concern thus is why he doesn't weld on heads. I think he has someone in Houston he uses.
When i had a head which needed welding i sent it to Y2K, he does great stuff.
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Texas12R
Zone Head
Posts: 545
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posted November 23, 2008 09:47 AM
I talked to Jim on the phone.....Great guy. I dont doubt his ability or his knowledge.
I was thinking that if this repair on Brenda's head was going to be expensive
it might be a way I could help her and Paul out.
But I would need some information to ensure a successful repair.
I have done work for people that had limited resources, because they needed
help but couldnt afford some of the prices I have seen charged.
I am by no means saying that everyone charges to much for their work.
Two years ago a kid knocks on my door...with a case half from a yz 125......It had a cylinder
bolt broke off.....his Dad tried to drill the stud and got off center, and still had the majority of the bolt left in the case......He said he needed help, and would work for the cost of repairing
the case if I thought it was possible.....I was able to extract the bolt, fill the void and re-drill
and tap....you would have thought I was Santa by the look on this kids face......
He asked how he could pay me..........I told him to ride......stay out of trouble......mind his parents......and help the people he meet along the way.........
The look on his face was worth more than money to me.........
I try to help the people that I can........
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brendasue555
Expert Class
Posts: 436
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posted November 23, 2008 01:15 PM
You are so kind and if there is a way that you couls help I will let you know. Paul and I feel the same way when it comes to helping others we feel that if everyone in the world gave to others what they have to give there would be a lot less need. And while we are on this subject.........Paul and I live 3 short exits from San Antonio Raceway so if there is ever anyone that needs a place to crash or an extra set of hands or a tool they might have left at home we are always ready to help just say the word.
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Brenda
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VincentHill
Needs a life
Posts: 6520
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posted November 24, 2008 09:57 AM
 Edited By: VincentHill on 24 Nov 2008 17:58
The torched Valve looked like NOS but I thought this was Brenda's head (ZX11 Head) still is not that bad! I hope hers looks no worse than yours! I was at about 204+ at the top of 5th getting ready for 6th when I did mine! Y2K Does Head repair? I knew he did Porting but on Clean undamaged heads! I need to speak to him about 2 of my heads!
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entropy
Moderator
Posts: 8671
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posted November 24, 2008 10:25 AM
Vince,
Jim's porting biz is inside a VERY well equiped race car motor building shop, and with them he does everything: porting, seats, welding, bore bucket wells, flowbench, you name it.
Hell, I betcha they make billet blocks n' heads.
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mathews
Expert Class
Posts: 425
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posted November 24, 2008 10:50 AM
Reher-Morrison also does repairs like this.They had some pro stock Suzuki heads in there last time I was in
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted November 24, 2008 02:26 PM
Just saw this thread..... I dont get on here as much anymore...
Yes, we can weld heads and repair. And yes there is a procedure to do it correctly as to not loose the heat treat in the head. We usually tig blocks and heads but in some cases mig and in some rare cases stick weld the aluminum. Some of the old winters aluminum chevy heads and blocks need very special treatment due to the crappy material and castings.
But luckly the bike heads are of good quality aluminum and have a consistant heat treat.
Bottom line... yes it needs to be done right. The press fit on the seats after welding is critical. If you weld anywhere near a seat it will have to be replaced or it may come loose and come out at the worst time possable.
Those guides are most likely junk as well.
When you run Nitrous, the exhaust valve seats and valves take a beating. Stock valves dont take the punishment well. Metal creep is another problem. Even good stainless valves should be replaced BEFORE a failure on a regular basis when running Nitrous. Molecular creep is real, very real.
We have Jay at APE make our custom Busa valve seats. We keep the seat widths wide for Nitrous bikes to keep the valves cool. The seat does 80% or so of the cooling of the valves.
The stock seats were never designed to cool the valves enough for nitrous. The stock exhaust seat with is narrow about 1mm (.040") The bronze alloy is WAY better at moving the heat from the valve to the aluminum head.
Karl, I'd love to make a billet top section for the zx14. It needs it badly. But we just dont have the time. Were designing some Darton MID sleeves with 87mm bore for the zx14 right now. And also some for the GSXR1000. I've got a few customers that want to spray zx14's and gsxr1000s with a LOT of nitrous. And the only way they will hold up with big bores is with a whole new deck like the Darton MID system.
These guys are sick I tell ya.
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aliveagain
Needs a life
Posts: 5033
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posted November 24, 2008 02:46 PM
how much more weight will the iron sleeves have?
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brendasue555
Expert Class
Posts: 436
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posted November 24, 2008 04:06 PM
Wow this has turned out to be a very interesting and informative thread. The pictures are not of my head. I am in the process of cleaning mine up and getting some good pics of it and will post some in a day or so. But ya'll keep talking, I am learning alot and I love it. I never knew there was so much to motors and especially about heat inside the cylinders and the different things it causes. Like pre ignition and especially detonation. I have learned so much about it all and just want to know more and more. For example I thought that the spark plug was to cause an explosion to push the piston down I have learned that explosion is not good what you want is a controled even burn of fuel starting at the spark and working uniformly outward like when you throw a rock in a smooth pond and the ripples radiate outward. No big deal to you race guys but this is major knowledge to a girl who thinks like a girl. And that is just the beginning of what I have learned in my journey to understanding detonation, I totally get it now all the way down to what causes the ping sound that often is heard. Ping =resonance of the structure of the engine at 6400 hertz and not some stuff flying around in the cylinders or any metal sound as it contacts another metal. I was stoked to find out that it was the actual metal making a sound much like a wine glass does at certain frequency. Boy am I gunna feel dumb if I am understanding this all wrong but that is what I have taken from some of the research I have done in trying to understand why my bike did what it did. I feel so smart and want more knowledge. Am I getting it so far? And what causes this resonance? A very sharp but short spike in pressure in the combustion chamber part of the cylinder caused by the ignition of fuel left in the cylinder after normal combustion is caused by the spark plug. This spike rings the engines bell so to speak. How bout that!
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Brenda
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SteddyTeddy
Pro
Posts: 1664
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posted November 24, 2008 04:15 PM
Brenda for an old ZX11 I would just find another head. They are cheap to pickup. I've thrown out 2 or 3 over the last year that I picked up for parts. I could probably find you one for the cost of shipping on the ZRX site. We pick them up for the cams, rockers and valves then throw the heads out.
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