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Go Back   TDIClub Forums > VW TDI Discussion Areas > TDI Power Enhancements

TDI Power Enhancements Discussions about increasing the power of your TDI engine. i.e. chips, injectors, powerboxes, clutches, etc. Handling, suspensions, wheels, type discussion should be put into the "Upgrades (non TDI Engine related)" forum. Non TDI vehicle related postings will be moved or removed. Please note the Performance Disclaimer.

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Old January 21st, 2010, 12:41   #61
Rub87
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So not all CR engines are 16.5:1 CR?

we have now in exeo etc, you really notice the low CR when starting without glowing in subzero temps =)
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Old January 21st, 2010, 12:47   #62
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I guess the jumped the gun a bit. The Bin 5-spec TDI already has a CR of 16.5:1. Can't speak about other 4-/5-cylinder common-rail TDIs.
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Old January 21st, 2010, 13:01   #63
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From another thread, this is 87turboquattro's own work, albeit on an 8V. Very nice! Bill, are these OE seat rings? If not, can you share the material, if known?
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Old January 21st, 2010, 13:25   #64
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Those are not oe...though they are not beryllium based either. I forgot the material. Thats one of my cylinder heads. Prior to cutting of course. If you look into the ports of the CBEA you will see that the casting flash is directly related to the injector boss. If you look into the top of the head, you will see how the boss tapers and where it ends. Larger valves require larger seats for the most effect. I dont feel as yet that there is enough material for a long lasting design if you add larger seats. Part of the porting issue is removing some of this "safety material". Time will tell. I inspected the head prior to any machine work and discussed with Bill immediately why I felt o\s valves would be a challenge, without even knowing if that was in the cards. I'm always looking at options when I see anything. We will see. I cant afford one of these right now as they are 4k for a low mile one complete. Maybe later.
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Old January 21st, 2010, 13:37   #65
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Thanks for the explanation, Chris, much appreciated. I think I have a better idea now. I'm still very much a visual person and can better understand something holding it in my hands or seeing a picture than for something to be articulated in words. I should have a chance to meet with tdisyncro in the near future to see the progress of the project.
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Old January 21st, 2010, 14:00   #66
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Quote:
Originally Posted by TDIMeister


From another thread, this is 87turboquattro's own work, albeit on an 8V. Very nice! Bill, are these OE seat rings? If not, can you share the material, if known?
i'll have to check on material,the seats are semi custom.don't quote me but they may be a -2n material.soft to work w/ but then work harden w/ heat.work well in offshore racing.

btw,pics were set to syncro just a couple of minutes ago.
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Old January 21st, 2010, 14:04   #67
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Quote:
Originally Posted by mrchill
Thats one of my cylinder heads. Prior to cutting of course. .
bad news chris,that was my 1z head.it was fully ported prior to this upgrade.

maybe a teaser pic of it now that its finished and sitting for a long rest.
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Old January 21st, 2010, 15:06   #68
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No...you ported it more afterward...dont you remember? And where is my AHU head?
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Old January 21st, 2010, 15:15   #69
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I think I'm going over to assist the one handed machinist....there may be hope yet!! We'll get pix...argue over methods....and figure out how the heck to pull off the big seats....IF he isnt preoccupied with chix and boats that is!
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Old January 21st, 2010, 15:18   #70
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Very interesting prospect, but even though I will never get close to that, I am going to see how far I can reasonably go with just 8 valves and 1 cam.
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Old January 21st, 2010, 15:24   #71
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Pretty far I'd say.
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Old January 21st, 2010, 16:48   #72
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Quote:
Originally Posted by devonutopia
I am going to see how far I can reasonably go with just 8 valves and 1 cam.
40/35,5, 13mm lift.
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Old January 21st, 2010, 16:52   #73
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Quote:
Originally Posted by dvst8r
I am curious as to your custom injectors.
I know of someone that has machined vw injector bodies to accept cummins nozzles, and has quite a wild set of custom injectors. It also sounds like (haven't actually talked to anyone) that nicktane can have a a pretty big set made.
Then there is also the route of going to someone like a DDP, or a JL Machine, or ect... and you could have new nozzles EDMed, then flowed and balanced via Extrude Hone.
Just kinda curious as to the direction you took, more then the specific size of the nozzles you had made.
The injector nozzles will be custom EDM'd and flowed. That is about all I can tell you on that front right now. There are a number of vendor options for that, and I will list them in the vendor section when we get that part in motion.
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Old January 21st, 2010, 16:53   #74
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Quote:
Originally Posted by shadowmaker
40/35,5, 13mm lift.
i like the way you think.
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Old January 21st, 2010, 17:05   #75
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Now do something insane like that for Louis' 16V. It's his thread, after all.
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