Another turbo

[1260pete]

My bandit turbo
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Pete

[Acemastr]

nice!

Power figures?

Vids!
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2017 KTM 350 XC-F - 2014 Yamaha R6 - 2005 Yamaha YZ125
2016 Toyota Tacoma Limited

[1260pete]

[RhynoCZ]

Road legal?
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[1260pete]

[P.]

Nice, CHR15 will be in shortly

Dat swingarm though.... fucking christ thats long.

[1260pete]

[virus]

eyup pete, welcome to bcf. Did you say you were on a 10psi spring now?

btw check out project 'cant afford a 7/11' in show and tell, you may recognise it


Cheers
John
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own: 81 xs1100g...
owned: 85 rat CG (sold), 91 GS500e (stolen), 84 gsx400f (scrapped), 81 z250 (siezed, siezed, scrapped), 83 cb250rs (sold), 84 gpz750r ratfighter (killed) 84gpz400 (sold), '80 cb650 ratfighter (wrote off) 95gsx6/12f ratfighter (killed) 91 xj900 (sold)
stinkwheel Well I just had my hands up a pigs fanny. Which makes your concerns pale into insignificance.

[1260pete]

[virus]

15psi? at a guess id say about 350hp?


Your mad mate
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own: 81 xs1100g...
owned: 85 rat CG (sold), 91 GS500e (stolen), 84 gsx400f (scrapped), 81 z250 (siezed, siezed, scrapped), 83 cb250rs (sold), 84 gpz750r ratfighter (killed) 84gpz400 (sold), '80 cb650 ratfighter (wrote off) 95gsx6/12f ratfighter (killed) 91 xj900 (sold)
stinkwheel Well I just had my hands up a pigs fanny. Which makes your concerns pale into insignificance.

[1260pete]

[CHR15]

carb tops wont last long at 15 psi.
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Turbocharged drag thing / project death weapon / GK73A
Ste: I'm not entirely sure how you'd go about verbally abusing someone with a potato but I'm sure it's possible.

[1260pete]

[lilredmachine]

You running a fuel pump/in line filter Pete?

Quite surprised you are getting shit from the tank that far down the system!
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Bikes: too many, too much for one man to maintain anyway.

[1260pete]

[stevo as b4]

Erm can i ask you turbo guys a question at the risk of an off topic?

I see you all use external wastegates on your builds, and seem to use large car sized turbo's. Is the reason for the EWG that the internal ones can't flow enough gas past the turbine to control boost, or is it for packaging/ ease of installation?

And secondly what do you do with the internal waste gate to keep it closed or do you remove them and or weld up the turbo housing?

I'm asking as i want to upgrade to a ball bearing turbo on my car soon, but all the turbo's i see for sale have an IWG as std. My car has an external one fitted, and i can't really be bothered to change the manifold or blank it off. Can you get roller bearing GT28 series snails without an internal waste gate for simplicity, or do i have to lock shut the IWG, which seems a waste to me on new turbo, as it would be an added feature that i dont need?

[CHR15]

[1260pete]

[Pete.]

[stevo as b4]

It's a Rover 220 turbo, thats been fitted with the T28 turbo from a Nissan 200SX S14. the specs are:
(46.6mm /60.1mm), 62 trim turbine (53.8mm/41.7mm) in a 0.64 A/R T25 housing.

I don't mind having to fit a turbo and blank off shut the IWG arm, as that is how it's been done on my car, but i thought it would be simpler and look neater if i could get a new turbo without a wastegate fitted, as it's one less thing to have to worry about?

I certainely wouldn't want to pay £££'s extra though just to lose the IWG system, and as Chris said it's maybe not economically viable if thats the case?

[1260pete]

[stevo as b4]

Hi Pete.

Are you running the same type of turbo on your bike?
The exhaust side of my turbo has a 5bolt flange and a tubular steel 2.75" downpipe leading into a 2.5" section to where the cat would have been fitted. The EWG is fitted to a welded on bit of pipe and flange on the exhaust manifold just before where the turbo bolts to it. I assume it's a cast iron pipe, as thats what the manifold is made from.

I also noticed that some of the ball bearing type turbos have a V-band? which looks like a different way of connecting the exhaust downpipe to the charger, which i not keen on changing as id need a new downpipe then as well.

Do you know if any hybrid turbo companies could re-build my existing turbo into a ball bearing one, or is it best to buy a brand new one if it's nearly the same price?

I've also been told that the T28 from the Nissan is only reliable to 15psi, but some people have said it can run at 17-18psi without getting damaged or breaking up, does that sound ok?

[1260pete]

[Pete.]

I do believe the GT28R is a direct replacement for the T28 off a S200. They even come with the 3-bolt compressor outlet to bolt to the Nissan up-pipe.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[stevo as b4]

Thanks guys. I'll look into the GT28R turbo then and think i'll ring turbonetics for some advice. I assume It would be a Genuine Garrett turbo, as I know other companies like HKS make T28 style turbo's as well. I'll ask then if they can do one without a wastegate built in as well.

I'm not desparate, as the turbo is not knackered completely, but I want to change it before it gives problems. It's useful to know that I can safely go a bit higher than 15psi if I want to with a T28 or GT28 turbo, and not overstress or overspeed it.

I suppose a bike is a much more stressful environment for a turbo than a car, because of the much bigger rev range and faster throttle response than in a car engine?