Suzuki Engine with carb under the right hand engine case?

[sandman1976]

Hey all, BARN FINDS!

Got a Fantic 175 and another bike which im not sure of.

The bike has a DT look, but the engine is a Suzuki, and it has the carb under the right hand engine cover???
Can anyone name that bike?
I will try and get pics up tomorrow.

Cheers!

[Tristan.]

it'll be a rotary valve two stroke, TS125?

[Bezzer]

....or possibly one of the DR models
____________________
I used to be indecisive but now I'm not quite so sure.

[Kickstart]

Hi

The old GP100 and GP125 had the carb under a cover on the r/h side. Presume the older models of TS125 used that engine (but not sure).

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[Pete.]

[Marmalade]

Could it be an ER? I think these probably had carb on back of barrel though.
____________________
Nobby the Bastard: How yo tell the difference between the actual japanese and her just screaming because she's had live fish stuck up her arse? [url=https://www.nicks-shop.co.uk/bcf-goodies-15-c.aspGet BCF stickers and things here[/url] Reflective helmet stickers - Legal requirement in france - Clicky

[monty16v]

i think the suzuki rv series had side mount carb too
____________________
OffTheClockMotorSport

[MickC]

I'll go with the A100 - does it look like a big FSE?
____________________
XX XXXx
Previous: CG125,XS250 (converted to 400),Z250A, GPZ550, Norton Commando, XS500, 78 Laverda Jota, GPZ1100,Harris bonneville, XV750 (mono shock),TR1

[Kickstart]

Hi

OP said "The bike has a DT look" which suggests an off road style bike so not sure it can be the A100 / B120.

Had a look round and I can't find any Suzuki off road bikes with the carbs under a cover on the side of the engine.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing

[MickC]

can you post a picture of it?
____________________
XX XXXx
Previous: CG125,XS250 (converted to 400),Z250A, GPZ550, Norton Commando, XS500, 78 Laverda Jota, GPZ1100,Harris bonneville, XV750 (mono shock),TR1

[Pete.]

B120 was outside carb I think. Unless it's something obscure my guess is it's a roadside engine in a trailie frame.
____________________
a.k.a 'Geri'

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

[Carvel]

Tc100?

https://p1.bikepics.com/pics/2006%5C09%5C17%5Cbikepics-681458-full.jpg
____________________
2002 Aprilia RSV1000R, Cbr600Fs, Mk1 B12, Vfr400 NC30...

Matt B: I can deal with crushed nuts to beat Ollie.

[MickC]

Not saying this for sure but it looks like the TS or TC 100 1975 if you follow this link it shows some on there (about half way down the page)
https://www.suzukicycles.org/1970-1979/1975c.shtml
____________________
XX XXXx
Previous: CG125,XS250 (converted to 400),Z250A, GPZ550, Norton Commando, XS500, 78 Laverda Jota, GPZ1100,Harris bonneville, XV750 (mono shock),TR1

[monty16v]

rv90
https://www.bikez.com/pictures/suzuki/1976/10506_0_1_2_rv%2090_Image%20credits%20-%20Knarf%20Knireprah.jpg

rv125
https://www.tradebit.com/usr/manuals/pub/9002/suzuki-rv125-van-van.jpg
____________________
OffTheClockMotorSport

[sandman1976]

Hey all a few photos, think i have figured the frame to be a DT125 but still unsure bout the engine. heres the picss.
Last pic is the Fantic... Pretty sweet find to be honest i love the classic trials!

[Tristan.]

Definitely a GP engine, either 100 or 125, only difference is the barrel (and inlet timing)

[Wyldkat]

+1
definitely GP
____________________
Oldie - 1987 Suzuki GP100 SOLD!
Current (as of 12/7/12) 2001 Honda Varadero 125

[joshbaty116]

[Teflon-Mike]

Its GP100/125, motor, more likely GP100 TBH.
Frame?
OK, its Yam.... might be DT125, more likely DT127MX, and round section swing arm would date it to the earlier 1977/78 model, but bodywork and seat are all wrong, as is fuel cap.
Mudguards are too wide to be DT.... could be aftermarket plastics, but look more like YZ or IT items.
Seat is too short and too low to be DT-MX.... may be cut down, or course, but looks too small to be YZ too.... more like IT.
Side stand lug.... looks like it may have been grafted on as an after thought...... DT would have had one as standard, & I think IT did too, but YZ didn't.....
So, from photo's, we can say, conforms to know known model.....
What constituents are in there, even harder to say.
Why a GP engine would be shoved in there is anyones guess....
GP motor was pretty 'pokey' in its day, but it was a 'square' 50x50 bore and stroke, engine, over bored to 55, I think to get an over square 125, which was pretty much its limit.
The DT's engine was a square 54x54 125 which over bored nicely to over square 175, and dropping the 175 barels onto a 125 bottom end, gave a useful 17bhp, with the same carb and exhaust, over the 14 the 125 made.
A genuine, pre '82 DT125 would have been a sought after bike; when the Learner power limit was 12bhp, pre 82 bikes enjoyed an exemption, they merely had to be under 12bhp, and you could 'tune' them as much as you liked, so as standard, the Aircooled DT would have been more powerful than normal L-Plate limit, with scope to tune, legally.
GP100 & GP125 were both 12.5bhp compleint as standard, so you would have to tune one to even get close to what a DT125 had as standard, so be curiouse why any-one would want to do that swap.
Unless it wasn't a DT125.....
If it was a DT175, which was far more common, then sticking a 'learner-legal' engine into it, could make a cheap Learner bike. DT175's were, very numerouse and dirt cheap post 82 125 Learner Laws, and so many ended up as field bikes, becouse learners couldn't ride tham, and full licence holders wanted bigger bikes.
If it was a YZ125.... then there's more reason it may have ended up with a GP commuter motor in it.
The air cooled DT engine was a tough old boot; bit prone to siezing if it wasn't given two stroke oil, or someone decided to run on pre-mix and didn't up jet, or heavily thrashed in the dirt with clogged finning... but apart from needing the occassional rebore, cranks lasted well, and gearboxes rarely gave much trouble.
YZ was a different kettle of fish.... the reed valve motor was particularly potent against the bikes of its day...... the long travel monoshock rear suspension had been introduced in the 73 season, and adopted accross the range for the 'proddy' bikes by '75, and that alone made most of the twin shock competition 'obsolete' at a stroke. Saw the four stroke 'Scramblers' made dinasaurs almost over night; but even the two strokes would struggle against a Yam, as many not only were still running T-Shock back end, but bikes like the Bultaco Persang were piston ported.
Consequently, Yamaha were at SUCH an advantage they didn't really have to 'push' thier motors very much to stay ahead, and the air cooled engines stayed fairly softly tuned for quite a while, until the water cooled engines started to come in in the early '80's... lead by Yamaha!
The 'durability' of the old air cooled Yams, was often their curse... as clubman and school boy mounts, many were told get a Yam... they dont blow up..... and of course believed that meant... they never blow up, even if you dont touch the engines..... so many got thrashed to death.
When the water cooled engines came along, Yam started pushing the powers up, and they motors started getting fragile, and again, many ened up in peoples back gardens with the top ends removed... to discover an expensive engine rebuild was needed.
This SUGGEST a TY might have had a GP motor stuffed in it, to substitute for a 'dead' yammie MX mill..... however, the YZ with cantliever back end was short lives, and air cooled, so doubtful.
Much more likely to be DT175 field bike.
IT 175 is interesting.... that would be a rare bike.... basically DT175, but with some parts bin raiding from the pure competition models.... engine was the air cooled 175 DT lump, but tuned, to deliver I think 19 or 20bhp instead of 17, but apart from the bodywork and solo seat, gained I believe TY trails bike engine cases and brake back plates, which were magnesium, rather than plastic or alloy.
Selling in vert small numbers, interesting bike, so doubtful....
BEST bet is it was a DT175 field bike, some-one had the notion to try and make into a 'cheap' learner legal, with sub 125 motor.
My DT has a similar providence; its a 1975, DT125E, 'Twinshock' now the more valuable collectors bike.... but it was rebuilt, we presume in the early 80's into a later MX frame, probably from a 175! Though using the air colled five speed 125cc Engine, to keep it Learner Legal!
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'

[Wyldkat]

F**K me Teflon!
Is there really anything about bikes that you don't have locked up away in your noggin
____________________
Oldie - 1987 Suzuki GP100 SOLD!
Current (as of 12/7/12) 2001 Honda Varadero 125

[Teflon-Mike]

Comparing some pics, frame is virtually identical to DT175MX in the engine cradle.
Side stand lug is in the right place, may just be dirt or could have been bent/broken or rewelded.
Seat, and rear mudguard..... bit of comparison, and it looks like the tail of the frame rails have been lopped off.
From the triangle around the airbox, the top rail would continue backwards and then make a horseshoe over the mudguard behind the seat.
Seat appears to have been abreviated at the same point, where it would taper from the top of the side panels to end at the mudguard loop of the frame rails.
My betting is that its been lopped to fit generic MX plastics, to whats otherwise a hacked about DT175MX
Petrol cap looks intreguing. Tank looks DT175, but cap should be screw on plastic bottle top, with vent. That looks like a flush chrome cap. They did do a 'locking' petrol cap, but it was still a screw on and vented job. I wonder if they have used tank cap of GP100 and chopped the filler nick to make it fit?
____________________
My Webby'Tef's-tQ, loads of stuff about my bikes, my Land-Rovers, and the stuff I do with them!
Current Bikes:'Honda VF1000F' ;'CB750F2N' ;'CB125TD ( 6 3 of em!)'; 'Montesa Cota 248'. Learner FAQ's:= 'U want to Ride a Motorbike! Where Do U start?'

[MickC]

Change of name for Teflon Mike to Encyclopedia Biketanica is called for!. Know some people that live and breath them but bloody ell !!!!
____________________
XX XXXx
Previous: CG125,XS250 (converted to 400),Z250A, GPZ550, Norton Commando, XS500, 78 Laverda Jota, GPZ1100,Harris bonneville, XV750 (mono shock),TR1