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Tiger Head Tiger Head owners can give there opinions along with their track results

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Old 11-25-09, 03:22PM   #46
twinturrbo406
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Default Ball Park ??

So what would a ball park price be for something like that ? So what would be the smallest bore in your opinion ?? 4.250 maybe ??
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Old 11-25-09, 10:43PM   #47
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Yeah Twinturbo , 4.250" would probably be a minimum . The seat rings that the head has pockets for are 2.340 int. and 1.830 ex. o.d. and they butt each other . so to reduce the size of the rings and such would be a little more difficult . Unless there was more of a call for it...then we could get new castings before they go for machining and either leave the seat pockets out or give them a specific size to machine them for a short run of heads. But at some point I'll need more material in the bowl to get the throats correct for smaller valves . But then they might go on an even smaller bore . Price wise...I could'nt call it for sure , if someone was really interested I'd sort all out in $ . It would be pretty cool though...The cross sections in the intake port are smallish as cast , and with a 2.150-2.200 valve would still require some minor work , but has great velocity and on a smallish c.i. engine would kick some butt. We've never had a call for this! It's where I don't think we compete with the other heads...nor do we try to. But we could . Won't be a bang for the buck thing... but for someone who had to have it! Cheers , Johnny
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Old 11-26-09, 02:43PM   #48
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Default !!!!!!!!!!

Happy Turkey Day Tigar Boyz !!!!!!!!!!!!!!!!!!!!!!
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Old 11-27-09, 10:29PM   #49
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All Pontiac is having a winter sale on Tiger heads,IA2 blocks and tiger manifolds, call Frank or Bob for details. Bill C.
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Old 12-04-09, 11:50PM   #50
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Default Valve Relocation ??

Hey guys, i was just wondering where or who the idea/work for the valve relocation in the new generation Tigers was thought up ?? Is this common technique for like a Pro Stock head or something ?? Just wondering who thought it up, because i'm curious as to how much time it would take if this was tried on an E-Head. And what are your thoughts on this being applied to an E-Head ??
Not sure if there is enough material in there to pull it off. Does Jammel's heads that Gaby did have this type of relocation on the intake valve ??
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Old 12-05-09, 09:42PM   #51
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Quote:
Originally Posted by twinturrbo406 View Post
Hey guys, i was just wondering where or who the idea/work for the valve relocation in the new generation Tigers was thought up ?? Is this common technique for like a Pro Stock head or something ?? Just wondering who thought it up, because i'm curious as to how much time it would take if this was tried on an E-Head. And what are your thoughts on this being applied to an E-Head ??
Not sure if there is enough material in there to pull it off. Does Jammel's heads that Gaby did have this type of relocation on the intake valve ??
Twinturbo,

Are you a head porter?? I just realized that it said that under your name..

It's not a Pro Stock or Tiger specific thing, valve location is #1. Cylinder head designers design valve locations first into their cylinder heads before they start designing ports.

You can design the best port in the world, and if the valve is in the wrong place it will NOT run.

Once again, valve locations are dependent on the application!
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Old 12-05-09, 10:42PM   #52
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Yes, i'm a Head Porter. But, i've never had the chance to work on any of these heads yet, so i'm forced to ask alot of questions. So how long did it take you to figure out where the valve should be in the Tiger Head ? Did you experiment with different locations, or just nail the first time ??
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Old 12-06-09, 01:35AM   #53
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Quote:
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Yes, i'm a Head Porter. But, i've never had the chance to work on any of these heads yet, so i'm forced to ask alot of questions. So how long did it take you to figure out where the valve should be in the Tiger Head ? Did you experiment with different locations, or just nail the first time ??
I don't know how much time, but moving valve locations is like everything else. You have to take into account MANY other variables that it may affect negatively. There are some general guidelines, but it depends on what you're trying to achieve. It can be EXTREMERLY application specific.

I do know that if the valve is in the wrong spot, you're DEAD!!! You can't overcome it, even if you wave a magic wand over it..

As far as the Tiger heads, I came up with a valve location on my own. Turns it out was extremely similar to the other cylinder head/engine builders who were working on them.

Jimmy's valves were not moved. It was not in the budget and/or timeframe.

If I moved them and welded up the chambers there would probably be another 40-60hp.

What heads do you normally work on?
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Old 12-06-09, 10:20PM   #54
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[quote=Gaby Labiosa;

Well, since the gloves are off here we go. I have stayed pretty diplomatic and quiet about what I REALLY feel and know about this cylinder head, but I guess it hasn't worked. The CV1 has one of the worst port designs I have ever seen. But good job on those rockers...
[/QUOTE]

well thanks g-lab,
thats the best thing youve said about my product publicly or privately since admitting its the best bang for the buck in the 1.3 - 1.4hp/ci range on this very site recent months ago.
regarding my valvetrain, you are STILL missing the point that the reason i put the valves where they are is so that it balances the planar force vectors so guys arent REQUIRED to run $1000+ shaft rockers. yes it compromises port layout, but i knew that going in! so thats why i instructed t&d to option an offset position so that the resultant port can be straightened and developed. its unfortunate that you predisposed yourself as to its failure, others have not.

thanks,
jim
ps. last year at the pri, i specifically sought you out to tell you i had a new 225cc small port version for head port pros to work with. you gave me the thumbs up and said " thats exactly what was needed"
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Old 12-06-09, 10:28PM   #55
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Jim, IT STILL IS one of the best for the 1.3/1.4 ci crowd.

When I first saw the cylinder head, you and I spoke of the changes needed to be made. It was too big, too slow, and the wrong shape for the applications you are trying to market. Not that it can't be made to work, but it is NOT EVEN CLOSE. You said you wanted to keep quiet, and offer a smaller port version, calling it a "head porter's" ( or as cast ) head because you didn't want to piss off customers who bought the first 50 batch!!!

If you wanted to focus on avoidance of shaft rockers, that is fine with me. This is your design. But you yourself said you were not a PORT designer, but a valvetrain guy. So you did a good job to eliminate planar vectors and all this mess, but what about the port??

Why then blame me if people call me and ask about the port and manifold?? What am I going to lie??
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