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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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 Posted: Wed Sep 17, 2008 6:47 pm Post subject: turbocharging |
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i started with a standard 2005 Trx 400 ex. i fabricated a custom set of tuned length header very short! out of 3mm steam pipe 1 1/4 inch diameter. Mounted a garrett GT1241 turbocharger on the front of the engine between the motor and the oil tank. Oil feed comes from the centre of the oil filter housing and return back to the motor the a drain pipe fitted in the magneto case. hand made exhaust 1 3/4 pipe with a hot dog muffler. hand made intake pipe (no intercooler as yet) up to the carby. the original air box now houses the blow off valve, 10 psi fuel pump, and malpassi rising rate regulator. dropped a couple of jet sizes in the carby and set the boost to 7 psi. now the thing that lets you use the carby is a pilot tube which is a small tube in the outlet pipe from the turbocharger the pilot tube must!!! be fitted facing down in to the turbo pressured air. the pilot tube is then fitted to all reference lines fitted to the
carby to equilize the pressure in the carby. any other questions you would like to know feel free to ask. sorry i have no picture as yet |
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Sponsor
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Todd 127
The Day Starts With OZATV !
Joined: 12 Feb 2006
Posts: 1267
Location: Hawkesbury
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| Posted: Wed Sep 17, 2008 7:32 pm Post subject: |
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| Does it go ???? |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Wed Sep 17, 2008 7:46 pm Post subject: |
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email me the pics if you dont know how to host them and ill do it for you!
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2002 SE Banshee |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Thu Sep 18, 2008 9:09 am Post subject: |
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 hope this works
[/img] |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Thu Sep 18, 2008 9:10 am Post subject: |
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| i'll get some more a bit later |
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Thu Sep 18, 2008 9:49 am Post subject: |
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that is awesome!
so basically that "pilot tube" pressurises the float bowl? is that right?
is the rest of the motor stock?
what does it go like against other quads, eg banshees etc?
good work mate!
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2002 SE Banshee |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Thu Sep 18, 2008 10:13 am Post subject: |
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the motor is stock
it smokes my mates ktm 450 no problems |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Thu Sep 18, 2008 2:42 pm Post subject: |
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more picture
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4stroker
Joined: 15 Jan 2007
Posts: 1420
Location: North Queensland
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| Posted: Thu Sep 18, 2008 3:03 pm Post subject: |
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| Turbotrx wrote: |
it smokes my mates ktm 450 no problems |
2 wheeler or quad??
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2002 SE Banshee |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Thu Sep 18, 2008 3:08 pm Post subject: |
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| 4 wheeler |
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Big Jb TRX450
Roostin Away
Joined: 10 Jun 2006
Posts: 939
Location: victoria
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| Posted: Fri Sep 19, 2008 10:06 am Post subject: |
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how much did all that cost 2 do?...looks very interesting!!
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04 TRX 450r
with a bit of this & a bit of that |
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The Day Starts With OZATV !
Joined: 09 Sep 2006
Posts: 1518
Location: Middleton SA
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| Posted: Fri Sep 19, 2008 2:41 pm Post subject: |
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Great stuff.
I have a mate who wanted to do exactly this years ago.
Lot's can probably say that... but you've gone and done it.
Well done.
I'd be keen to see how the carby works.
Does the boost pressure try to hold the slide up?
Do you boost reference the top of the slide as well as the bowl etc?
My mate thought to put the whole carby in a pressurised box...
But like I said... you've done it 
When are you selling the kits 
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Can-Am X Team
Bullet #Y12. MrsB #Y18. |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Fri Sep 19, 2008 4:44 pm Post subject: |
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The problem with a pressurized box is trying to mount it in such a small spot and sealing it
all the loose hoses of the carby are connected to the pilot tube
the carby receives 3 psi fuel pressure at idle and as the boost rises so does the fuel pressure if boost pressure exceeds fuel pressure it runs the float bowl dry
the problem i had was the original main jet #148 was to big and everytime you hit the throttle to hard or even worked the throttle it would flood
it now runs a #138 main jet
i also removed the choke to get better air flow through the carby
the blow off valve stops boost from keeping the slide up
as for kits i almost lost my mind building this one
it took 6 months of trial and error more error than success |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Fri Sep 19, 2008 4:46 pm Post subject: |
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sorry price for me was about 300 dollars for all the piping
the rest was donated by various people |
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doorslammer
Roostin Away
Joined: 24 Jul 2007
Posts: 902
Location: Northern WA
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| Posted: Fri Sep 19, 2008 7:07 pm Post subject: |
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i got a garret turbo of a 5L, wonder what i can put that on
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01 Banshee
Never take life seriously. Nobody gets out alive anyway |
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The Day Starts With OZATV !
Joined: 09 Sep 2006
Posts: 1518
Location: Middleton SA
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| Posted: Fri Sep 19, 2008 10:37 pm Post subject: |
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Probably not a 0.5L
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Can-Am X Team
Bullet #Y12. MrsB #Y18. |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Sat Sep 20, 2008 10:44 am Post subject: |
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| The turbo i used is rated for 400cc up to 1100cc |
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The Day Starts With OZATV !
Joined: 09 Sep 2006
Posts: 1518
Location: Middleton SA
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| Posted: Sat Sep 20, 2008 12:33 pm Post subject: |
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There are a heap of little cars in Japan that run turbos ideally sized for Quads.
They have a small car rego class over there, I think they are called K class cars and they have a max displacement of 660cc.
The old (i think pre 1998) limit was 550cc.
Many of the turbo units are built into manifolds etc, but there are plenty of seperate units too.
Superchargers also.
Are we going to see a wave of turbo quads around ?
I can already smell a few boots melting on exhaust pipes 
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Can-Am X Team
Bullet #Y12. MrsB #Y18. |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Sat Sep 20, 2008 12:43 pm Post subject: |
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i'm pumpin the boost up to 9 today
from what i can calculate my trx should be making around 52 hp at the engine up from around 25 standard
one other thing is i have to run a 105 octane fuel |
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The Day Starts With OZATV !
Joined: 09 Sep 2006
Posts: 1518
Location: Middleton SA
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| Posted: Sat Sep 20, 2008 5:22 pm Post subject: |
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If you are already running 105 to prevent detonation, cranking the boost up would be a brave move wouldn't it.
Crank it down 1 psi and be safe, and it will last longer too.
Does it have a nice turbo note and turbo whistle.
that would be the coolest.
Being overtaken by a 400EX and hearing it dump as it snatches another gear going past.
Good work.
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Can-Am X Team
Bullet #Y12. MrsB #Y18. |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Tue Sep 23, 2008 12:38 pm Post subject: |
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i decided not to turn the boost up yet
pulling the whole thing to bit a again for a bit of a redesign
bigger fuel pump
intercooler
and new box fo all the extras |
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Big Jb TRX450
Roostin Away
Joined: 10 Jun 2006
Posts: 939
Location: victoria
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ReD HeaderZ
Roostin Away
Joined: 24 Jul 2006
Posts: 828
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| Posted: Wed Sep 24, 2008 4:16 pm Post subject: |
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| What a cool setup, looks good man, nice to hear that this is being done, good on ya. |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Fri Sep 26, 2008 9:06 am Post subject: |
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I was going to make a dry ice intercooler but i can't get any dry ice in west aus
a did pick up a holley blue fuel pump and boost controller this week
i might try ice packs around the inlet pipe and turn the boost up to 12
this setup is only for dragging i'll still run it at seven psi for bush and beach work |
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Turbotrx
50cc nipper
Joined: 17 Sep 2008
Posts: 49
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| Posted: Fri Sep 26, 2008 9:10 am Post subject: |
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and it does have a real nasty turbo whistle on decell
sounds awesome as it shifts up at night it shoots a 12 inch flame |
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