IHI RHB5 VJ11/VJ14 for a 323 GTX owner - Mazda MX-6 Forum
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post #1 of 55 (permalink) Old 7-31-06, 16:09 Thread Starter
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IHI RHB5 VJ11/VJ14 for a 323 GTX owner

This is something I am working on for a GTX owner. He sent me a VJ11 turbo with a bad turbine ring land as well as center cartridge and a VJ14 with bad seals on the compressor side.







VJ11^



VJ11 center cartridge ^ unusable



The VJ14 ^ he sent me had a bad mating ring, piston, oil seals, seal plate. The turbine was/is fine as is the center cartridge. I simply the VJ11 wheel to the VJ14 turbine and we were in business.
Here is what I started out with for the exhaust housing and compressor housing. Exhaust housing is VJ14, compressor housing is VJ11:





VJ14 wastegate ^



Exhaust inlet. Note the casting flaws ^ These will all be removed!!!!



Better picture, note the ridge along the side.



Vj11 compressor inlet ^



Weaksauce factory taper ^



Compressor discharge nozzle ^

Last edited by SixSick6; 6-21-07 at 2:30.
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post #2 of 55 (permalink) Old 7-31-06, 16:10 Thread Starter
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Getting down to business, first plan of attack was the exhaust housing. Keep in mind that this is all done by hand:




First removing the big stuff, casting flaws and impurities by debrurring. ^



Quite a tedious task with rotary hand tools, various drills, and without an air compressor for a my die grinder.



Big casting flaws like this one can be quite the pain to guys like me. First and only reason, I'm anal and want to get rid of stuff like that.



NOW, it's lookin a little better heh? HEH? lolNote that I started blending the wastegate housing.



I didn't go crazy with the wastegate hole. It was meant to clean it up with a slight port and polish and a taper to the backside. This should help with a smooth boost transition.

Here you can see I started blending the wastegate hole as well as smoothing out the rough deburring. This isn't exactly easy with cast iron and takes alot of time to do correctly.

1) So you don't ruin what you started and take steps backwards
2) Because cast iron doesn't like to be toyed with and will kill your attachments in a hurry if you push them. This gets expensive in a hot minute.



Note that it's starting to look alot smoother.^



Shinier too!



Final steps before 80, 150, 220, 400, 600, 1200, media blasting, then finally 2000 grit are used.



Exhaust discharge received the same treatment. ^



Both pictures un -finished^.
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post #3 of 55 (permalink) Old 7-31-06, 16:12 Thread Starter
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The compressor housing started off the same way:


Except with less flaws and less painful to work with. One flaw that I wish wasn't there is the slit in the housing that you saw in the un-modded housing picture. This is due to the assembly process and the compressor housing is actually two pieces. They're fused together at the factory.



Rough porting of the discharge nozzle ^



Final port and minor polishing done before, and result after being media blasted ^.



Close up of un-finished discharge nozzle:





Close-up before being mirror polished^.



Which is done by my girlfriend who like shiney stuff, although unrelated to turbos....



I decided to polish it up for free. It still isn't done completely.

And in case you're wondering about that exhaust housing, it still isn't done either (needs to be polished) but here it is so far. Quite an improvement heh? HEH?


Turbo itself will be rebuilt during the week.
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post #4 of 55 (permalink) Old 7-31-06, 16:20

 
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nice work

you should do up a few uncracked VJ11 exhaust housings....i'd be in line to get one in the very near future

88 626 4WS Turbo Noble White
97 626 LX V6 Timberline Mica
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post #5 of 55 (permalink) Old 7-31-06, 16:20
 
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how much this cost for you to do?

i like it and it does look damn good

basically if i wanted this done what would you charge me? including the polish job...i like shiny items under the hood

1997 Bravada (for sale) - 05 Trailblazer on 20's
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post #6 of 55 (permalink) Old 7-31-06, 16:33 Thread Starter
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Quote:
Originally Posted by HotAss6GT
nice work

you should do up a few uncracked VJ11 exhaust housings....i'd be in line to get one in the very near future
Find me an uncracked Vj11 housing and urine business. The VJ14 is a much better design and a much thicker wall (1/2") but the downside is that that the exhaust housing is much smaller as well. Turbines are the same between the two, the Vj14 compressor wheel is smaller than the VJ11. The VJ11 wheel for the GTX is like a T Bird wheel for the Vj11. Various dyno plots have shown the same type of results with VJ11 wheels on Vj14 turbos as the T Bird wheel does on the VJ11.
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post #7 of 55 (permalink) Old 7-31-06, 16:38

 
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werd...i'll be on the lookout..lol

88 626 4WS Turbo Noble White
97 626 LX V6 Timberline Mica
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post #8 of 55 (permalink) Old 7-31-06, 17:39
 
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post #9 of 55 (permalink) Old 7-31-06, 19:13
 
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better wife that one

all my gf does is bitch about my car when i put time or money into it. and yours actually helps you!! son of a.......

1991 gt - still busted
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post #10 of 55 (permalink) Old 7-31-06, 19:18

 
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my wife bitches and moans as well...

88 626 4WS Turbo Noble White
97 626 LX V6 Timberline Mica
Email me for a turbo rebuild!
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post #11 of 55 (permalink) Old 7-31-06, 21:53 Thread Starter
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She actually wants me to sell the MX6 and buy a 6th gen Celica. I'm not much of a fan of the 5SFE besides reliability in stock form. If I did, I'd surely go with a 3SGE or even better a 3SGTE. Neither of which would be legal in Ca. Just like any other stock bottom end, 250hp is about the limit for the 5SFE. BUT, I wouldn't dare try that high for long for the simple fact that I've seen the rods up close and personnal plenty of times already.
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post #12 of 55 (permalink) Old 8-1-06, 0:14
 
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post #13 of 55 (permalink) Old 8-1-06, 0:45 Thread Starter
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Thats exactly what I don't want, a beater that 99% of people into cars are interested in stealing.




Sans the graphics.

Or a nice clean stock Celica:



AE86, gimme a break.

Last edited by SixSick6; 8-1-06 at 13:24.
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post #14 of 55 (permalink) Old 8-1-06, 11:59
 
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ya well newer celicas are chick cars

haha my girlfriend wants me to sell my cars and get a newer mazda 6 or mazda 3

i like the mazdaspeed 3 a lot, but my credit is ruined

1991 gt - still busted
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post #15 of 55 (permalink) Old 8-1-06, 12:40
 
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Cant give you Karma again yet!
Nice work, Have you tried felt polishing bobs and wax? Amazing results.

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BUILD IT, BEAT IT, BREAK IT, REBUILD IT, BEAT IT MORE, BREAK IT AGAIN, BUILD IT BETTER, BEAT IT THE MOST AND ?
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