Reinhoud
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Posts posted by Reinhoud
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On 10/19/2023 at 11:42 PM, DAZ said:
It seems that many parts used in a "performance" build aren't strictly needed but are used because of the extra safety margin they provide and as @imagosays are generally a small price to pay for that peace of mind ,and especially on stuff that's 40 years old and getting rarer and more expensive to find . £160 for the gears vs cost of a turbo rebuild because the bearings are shot is cheap insurance
Depends on the turbo, but recon kits for a turbo aren't expensive..
A rebuild kit for mine is actually half of what a set of those sprockets will set you back.
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On 10/19/2023 at 9:54 PM, imago said:
It's not really a different story, it's just that there's more heat to deal with because increasing the power output also increases the waste heat generated.
As the heat increases in the oil it becomes less effective. So if you increase the amount of oil going round the system to compensate for the increased heat it has to deal with you can keep things more or less where they should be.
Ultimately it's an additional £160 to add the extra flow and pressure. Given the time and money involved in the engine build and turbo that spend seems a reasonable addition for the protection it provides (IMHO).
You won't get more pressure! More flow probably, but the pressure wil not rise noticable.
Make a reduction in the oil galley to the gearbox is also a trick.
Extra heat you'll fix with an oil cooler.
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On 10/16/2023 at 9:33 PM, Gixer1460 said:
Not quite true - cams are all plain bearings and are furthest away from pump plus those running turbo's which have plain bearings need approx 25-30psi minimum for any sort of life! We've all seen cam bearings wiped out through low / no oil! Its one of the reasons drag racers used to block off oil feed to gearbox, just to get that little bit more to the engine - gearbox happy with splash lubrication.
That's what I thought too, but then, the GS/GSX engines have not even 1 psi pressure, the camshafts do fine on that, as long as there's oil in a steady supply it's alright..
Turbo is a different story, apparently..
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Fuel is leaking when fuel pump is running? Lower the pressure to about 1.5psi
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I've done some experimenting with different gear ratio's and wider oil pumps.
As soon as the engine is at operating temperature, there's aboslutely f*ck all of oil pressure., no matter what gear ratio or how wide the pump is.
Keep in mind, the pressure is mostly determent by the resistance in the oil channels, or how big the holes at the ends are. As long as that's not changed you hardly win anything.
Assuming we're talking about a rollerbearing engine, don't worry about is, there's nothing in the engine what needs pressure, as long as it's lubricated you should be fine.
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Your carburetors are faulty, the float needles should seal off the fuel supply.
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39 minutes ago, Pegleg said:
That's what I have but mine looks cheaply made. Maybe a copy. I'm fitting a temporary fuel pressure guage to the bars to see if the pressure is dropping out and causing the issue. Have fitted an 8mm fitting too the tank. The stock tap does look restrictive.
When I had mine going I was running 2psi fuel pressure, for some reason the float needles started leaking after a while and had to drop the pressure to 1.5 psi.
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That's not a rising rate one, is it? Then that could be the problem..
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5 hours ago, Pegleg said:
I think so. I have 10mm pipe from the cold pipe to a splitter then 8mm to the carbs.
I was later thinking, if they weren't alright, it would cause problems as soon as it hits boost
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True...
Thanks guys, I'll keep it like it is then.
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5 hours ago, Pegleg said:
No idea but need to eliminate it as a possible problem.
I don't have any problems with my stock GS1000 tap.
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Are pitot tubes ok?
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On 10/2/2023 at 8:17 AM, Pegleg said:
Getting closer.
Restrictor sorted the oil supply, no more right leg covered in oil. Fitted 40 pilots which seems to have sorted the idle and part throttle bollox. Only real issue now before getting it on the dyno is it seems the fuel level can't keep up at 6000 rpm ish for about 1/2 a mile. Pull over and let the bowls fill up and its fine. Floats set at 16mm. Wondering if the pump can't get enough fuel from the tank at speed. Possible tank not venting or stock tap restrictive.
Float height, did you set all the floats at the same height, or did you adjust the fuel levels in the bowls?
Because if you just adjusted the heights of the floats, the fuel levels will be different..
Believe it or not.
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Is the original tap actually a problem?
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So a bigger pipe what can move more air doesn't make a, or much difference?
It's more about pressure?
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Busy building a new plenum, and idea's popping up, not sure if the idea's are any good..
I had/have a 2" pipe on it (from turbo to plenum), now I was thinking of putting a 2.25" pipe on it.
Will this improve performance?
Anyone been experimenting with this?
What size charge pipes are you guys running?
Thanks
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I already have an idea for the plenum.
The reason for asking is that I don't feel like experimenting / tuning again.
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Is Robinsons Foundry a real / only Suzuki dealer?
Or are the prices in Europe inflated?
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Tasmania must be a lot cheaper then..
I paid about 300GBP for the lot..
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Probably better...
I'm mostly curious how much difference there will be between my drawings..
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12 minutes ago, imago said:
They're 250 Eruro each from CMSNL.
Ask the Suzuki dealer for a quote
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Velocity stacks
in Forced Induction
Posted
I've got my bike on the road again, haven't really given it to it.
Made a plenum what is roughly 160cc bigger, and made velocity stacks in it.
The bike reacts way more enthusiastic on the throttle.
May post photo's later