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Turbo, Rebuild or Repalce with stock WRX turbo????
Posted 10 February 2004 - 09:39 PM
I started pricing rebuild kits for the RHB5 and was sticker shocked. The want $100-$125 for bearings, seals, screws etc.
I know I can buy low millage stock WRX turbos on ebay or NASIOC for not alot more than that.
My question is will the stock WRX turbo be too much for my EA82T?
Posted 11 February 2004 - 07:57 AM
Posted 11 February 2004 - 12:02 PM
Converting to a WRX turbo is alot of work. Been working/watching Tex on his conversion. You can't just swap exhaust it has to be modified to accept the turbo.
Posted 11 February 2004 - 01:13 PM
I failed to mention one thing....
The rebuildable turbo will require exhaust mods as the hot side has different shaped flanges than the stock.
Intake will also be modded to use a WRX intercooler.
I am planning on solving the hot side flanges with adapter plates that will bolt between the up and down pipes and the turbo. At some point I plan on fabricating custom exhaust bits and replacing the pipes all together.
So, still think it's the rebuild that makes more sense?
Posted 11 February 2004 - 01:16 PM
go on NASIOC and buy a stock WRX turbo back system from one of the guys in the for sale forums, they can be had cheap. the exhaust will fit but it may hang alittle lower than you would like. this would also be a good time to invest in an intercooler and the Y pipe that goes with it.
have you fit or at least eye-balled the engine in the brat? (is that what youre transplanting the stuff into?)
the spider manifold is en route as of my lunch break today...
Posted 11 February 2004 - 01:40 PM
Posted 11 February 2004 - 02:48 PM
its necessary to mod the crossover? the TD04 shares the same uppipe bolt pattern as VF series turbos, including the stock EA82 unit (VF7?)...
i hadn't heard anything like that yet, what has to be tweaked on it?
i did alot of research in this department. i didnt give it the attention tex did because im not sure there will be much of a difference between the VF11 i use and the TD04 hes got if you are sane and dont boost over 14-15psi with out getting into copper HG's and other stuff...
Posted 11 February 2004 - 03:09 PM
Remedy this by picking up a WRX uppipe (~$30) and cutting the flange off. Then weld it to the top of the existing flange. This will guarantee the turbo sits level and the downpipe geometry isn't messed with. This additional height will aid in clearing stuff engine wise with the plumbing, it should also help to snug the exhaust up a bit.
It might still be necasary to rotate the intake housing on the turbo to get the plumbing to clear everything.
Some where on that big internet you can buy just the flange... But i'm not sure how much its going to run.
I'm not sold on copper's yet. I believe that a properly put together engine should be able to hold 15psi or more. WRX guys run up in the 20's on stock engines.
Posted 11 February 2004 - 03:29 PM
However, I might not even need to rebuild the turbo I have. Last night, I filled the oil inlet and spun the shaft a bit, let it sit over night and the little bit of play in the shaft nearly went away.
Hey Dennis ex24, Know anything about the RHB5 VJ5 turbo? It's the turbo, that I have and am thinking of using.
And yes, I've measured the Brat and the motor, it's gonna be tight but I can make it work well without messing up the frame rails or anything. As far as I can figure though, I'll have to pull (or atleast lift) the motor to get heads etc, off. I'm goning to physically test fit the motor in a couple weeks
Posted 11 February 2004 - 05:10 PM
Posted 11 February 2004 - 06:08 PM
i guess when looking at all this stuff, it starts to look the same after a while - and good to see youre giving some an additional road to go down. although im still confused as to why the WRX guys all want the turbo legacy catless uppipes if they are a different bolt pattern?
15PSI is definitley possible with an intercooler and stock cams but im curious as to what these cams were all installing will do for timing.
sorry garner, i dont know what a VJ5 is. i wonder if its a legacy unit because you noted that the wheel was slightly bigger. try posting a thread on NASIOC...one of those turbo nerds is bound to know what it is.
Posted 11 February 2004 - 06:40 PM
Oh, VJs are what them Honda guys use on their crap. some JDM stuff for inline 4 cars that are tranverse mounted engines...
Posted 11 February 2004 - 07:24 PM
Posted 11 February 2004 - 09:16 PM
Posted 12 February 2004 - 06:14 PM
So after thinking maybe this VJ was all good and not in need ov rebuilding after oiling it and getting the shaft play to mellow out, a new problem has shown itself
When I drained the oil out of the port a bunch came out of the wastegate side/exhaust port. Bad seals?
Now that we've been around and around on this, what would you do?
Rebuild Turbo = $100 parts, plus mods to exhaust and intake
WRX stock turbo = $150-$175 plus exhaust and intake mods
Beyond the $$$, how would the TDO4 work with the EA82T, will it be slower to spool than on the EJ20? I know it will provide more boost than my motor will handle and I can cope with this but I do want quick spool-up
Whose runnign what tubos out ther and what thinkith yee?
Posted 12 February 2004 - 06:29 PM
Posted 12 February 2004 - 09:08 PM
were all going to be finding out about the same time it looks like...who is going to have the fastest EA82T? any votes?
Posted 12 February 2004 - 10:27 PM
Turbos and their "seals" are very exact in tolerances. The "seals" are more like rings than seals. If you cannot measure correctly these tolerances and or do somthing about bum measurements, have somebody do it for you.
They then need to be balanced.
You should pay between $200 and $600 to have it rebuilt.
Learn form my mistakes I tried and then had a $135.00 box of parts.
PS if you have a bum one and want to see how they work take it apart! You cant make it any worse!!!
Posted 12 February 2004 - 11:12 PM
Posted 13 February 2004 - 04:42 PM
Thanks for making mistakes for others to learn from.
Do tell, what went so wrong with your $135 box of parts?
I have taken my rebuildable apart pretty easily after getting some info off the internet. Doesn't one just replace the seals and bearings and such or was there more to your rebuild (or de-build, as it were)
Posted 13 February 2004 - 08:29 PM
go WRX turbo. our stock turbo is too small.
Posted 13 February 2004 - 11:03 PM
My issues were I bought a standard kit for my blown mitsu 14b and the cartridge was worn. It smoked just as bad when done, as before. I later sold my cores and kit to a turbo rebuild shop for a small loss.
After I put my group A t3 on my Mitsubishi, I may try the 14b on my subie.
Posted 16 February 2004 - 09:38 PM
In the mean time, I snaged a TDO4 on ebay(sorry if I snipped anyone on the Board on this:D) for $137.50 shipped. Not bad and one less greasy mess to clean up.
I think I can overcome slow spooling issues once I fab up some kick rump roast exhaust and intake and get her breathing better.
Actually, now that I think of it, with this turbo and the WRX IC, I am also close to having a turbo kit for my Impreza all for just a bit over 2 bills
Posted 17 February 2004 - 08:35 AM
Posted 19 February 2004 - 03:31 AM
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