View Full Version : Suzuki gt125 premixing oil?
jvb
15th February 2009, 15:28
Hi guys
I'm building myself a bucket,im using a gt125 engine in a rgv150 frame.I was wondering if anyone knows if i can premix the oil and get rid of the pump and tank.the oil is feed into the crankcase via 4 banjo bolts,2 of them go directly into the intake ports but im not sure where the other 2 go,i guess they go into the main bearings.if that was the case i guess i couldnt premix...?
Any info on this would be really helpfull
Thanks,john
nudemetalz
15th February 2009, 18:45
I'm pretty sure the oil pump does lube the mains so you can't (unless you want crank seizure !!).
TZ350
15th February 2009, 19:56
.
Suzuki's T500's, T250,s T10's etc that had oil pumped to the main brg the oil was then collected by a slinger ring behind the main brg and passed on to the big end brg.
In the old days these race prepped Suzuki's had the oil line to the carb removed and the oil pump set to 30% to oil the main/big end brg's and the petrol premixed 20:1 castrol R.
With todays better oils premix 35:1 and set the pump to 30%
Or you can strip the motor and drill oiling holes to the main brgs and fit rods with oiling slots and throw the pump away.
.
piston broke
15th February 2009, 20:00
hey tz,
is that what i would have to do with the a100?
dangerous
15th February 2009, 20:02
.
Suzuki's T500's, T250,s T10's etc that had oil pumped to the main brg the oil was then collected by a slinger ring behind the main brg and passed on to the big end brg.
In the old days these race prepped Suzuki's had the oil line to the carb removed and the oil pump set to 30% to oil the main/big end brg's and the petrol premixed 20:1 castrol R.
With todays better oils premix 35:1 and set the pump to 30%
Or you can strip the motor and drill oiling holes to the main brgs and fit rods with oiling slots and throw the pump away.
. a world of knolage that...
JVB the Gt is CCI aye? now weres ya pic... not the bike ya missus :wari:
dangerous
15th February 2009, 20:07
JVB the Gt is CCI aye? now weres ya pic... not the bike ya missus :wari:
ohhh fug it ill post em up then, love the RG125T aye.
nudemetalz
15th February 2009, 20:07
Sorry to wander off the track a little here but thought this may help...
With the RGV150 frame, the forks are a little on the narrow & thin side if you put decent brakes and wheels on them. I had them wandering all of the place through left to rights and also under hard braking.
So, I put a fork brace on, made longer spacers to preload the weak springs and put 15W oil in (factory is 10W from memory).
Was an absolute mission getting the TZR wheels and caliper to fit too !!!
Also, raise the forks up quite a bit to steepen the steering angle to get it to not understeer and scrub the front end out. Really helps.
dangerous
15th February 2009, 20:09
ohhh fug it ill post em up then, love the RG125T aye.
Ohh shit, thats my bike... and your missus LOL, lets try that again
piston broke
15th February 2009, 20:14
ohhh fug it ill post em up then, love the RG125T aye.
lol,i didn't think that was a bucket:eek5:
dangerous
15th February 2009, 20:16
hey tz,
is that what i would have to do with the a100?
if it is a CCI engine then yes... but I dont think it is
Crank Case Injection
piston broke
15th February 2009, 20:23
if it is a CCI engine then yes... but I dont think it is
Crank Case Injection
so do i just remove oil system and run premix?
dangerous
15th February 2009, 20:26
so do i just remove oil system and run premix? with out looking at a A100 I cant say.
piston broke
15th February 2009, 20:32
with out looking at a A100 I cant say.
this is my first 2stroke,so i don't have a clue.
i don't even know what year it is:(
jvb
15th February 2009, 20:43
thanks for the advice...and the pics D! cheers for the front end advice nudemetalz,i'll leave it stock for now but might have a play further down the track.Just want to get it going and get out there!
ajturbo
16th February 2009, 15:50
i have 2 of them in my shed...
one that goese.. and one that Dangerous saw last year... with bits missing..lol
but i have KEPT the oil pump... i raced the broken one for 2 years before it shit the piston... and other bits..
i got it tuned for taupo race track by Peter Sales..
NEVER missed a beat....(while the battery was charged)
untill the piston finaly got over reved once too often..
F5 Dave
16th February 2009, 17:11
might as well keep premix, less hassle.
Not too hard to drill premix oiling holes, did on one of my suzukis, but needs full strip & conrods are a question (DS80 might be the go)
note the carbs are bigger than allowed intake area so you should technically fit smaller ones (can sleeve) or manifold to a single 24mm (do a search on Ivan's old thread on GTs). But until it gets competitive no one will likely complain.
Yow Ling
16th February 2009, 18:06
,so i don't have a clue.
i don't even know what year it is:(
Jeez man its 2009, get with the program
TZ350
16th February 2009, 18:40
Jeez man its 2009, get with the program
Whaaaaaaaaaat 2009 ??????? so its not lunch time then??? anyway, I am already on a program!!!!
koba
17th February 2009, 19:31
this is my first 2stroke,so i don't have a clue.
i don't even know what year it is:(
Start a thread about it.
Yes you can run premix but you will probably have to change the jetting becasue it normally only meters fuel, adding oil put the ratio of fuel/air out a bit.
If it runs fine now I would concentrate on getting out and using it before you piss about trying to modify it.
Did A100s ever change more than cosmetically?
speedpro
17th February 2009, 21:33
You used to be able to buy a race kit for them. The barrels had a bridged exhaust port. We bought the 5 that Colemans had for $15 each back in about 1983 I think.
dangerous
18th February 2009, 04:02
You used to be able to buy a race kit for them. The barrels had a bridged exhaust port. We bought the 5 that Colemans had for $15 each back in about 1983 I think.
A race kit! what/where/how did they race them in the 70's- 83?
F5 Dave
18th February 2009, 08:44
malaysia etc i believe. -probably reason no comp parts' rule was brought in early to exclude airforce boys bringing them back while stationed on some desolate outpost:laugh:
speedpro
18th February 2009, 20:47
We ordered them for a giggle because they were listed on the microfiche, and wouldn't you know it, they turned up. Me and a mate scored a fully kitted A100 for $50 a bit later. You could get kits for AC50s as well. The japs had classes for them and maybe Rod Coleman had something to do with bringing a few kits to NZ.
all4A50s
19th February 2009, 05:10
this is my first 2stroke,so i don't have a clue.
i don't even know what year it is:(
If the engine is the same as an A50 you can. The easiest way to check is to follow to where to oil actually enters engine. If it is post carb my understanding you can.
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