I stay in Marathahalli. Is there any good mechanic familiar with Fiero near this area - somewhere in whitefield, HSR, indira nagar hebbal etc would be fine? I want to get some modifications - swing arm, shocks, carburettor. Thanks



The air screw in my Fiero is jammed. The mechanic says the only option is to get a new carburettor. Can you explain how I can get it resolved? Thanks

@All: I'm happy to report that the carburettor problem is now solved.

The jammed and rusted air screw had to be drilled out at the Lathe shop& then rethreaded. Once the new screw was in, we turned it 4 turns and checked for mileage with a 100ml can to find it ran for 4.7kms.
I'm especially happy that the overheating, jerking & mileage loss is solved. Bike feels smooth and happy to ride now.

Apache 150's head is similar to that of the fiero,in the sense that the bore size is similar.But the rtr's have bigger bore and hence the valves are set farther from that of the apache150/fiero.So their rockers should be different and the same goes for the cam as well i think.

Assembly in progress. Went for a new 180 Bore and piston. Also got an old 180 head. However the valves are damaged so it's being reworked on the lathe.

BTW the mechanic told me the Cam and Rocker on the 180 head are same as the 150. He's not sure if both heads have the same Cams and Rockers or are they different.

So what's the latest on the re-build? and which option did you go for?boring out the apache150 cylinder? or did you opt for the new 180's cylinder?

The block piston is now about 2800.


You predicted this in 2010. We are in 2016 and TVS is just about starting with the Apache 200 that too only carb and no ABS.



I ended up paying double of that but that included shipping plus an additional head (150 & 180), electric started and few other parts.

Here you go Chief

RTR 180 block piston : Rs.2375/-
Cam tensioner : Rs.150/-
Shaving of the piston to make sure the Outlet valve sits in :Rs.50/-
FZ Handle : Rs. 150/-
NGK GPR7E plug : Rs.130/-
Sprocket set : Rs. 750/-
Sprocket bearing : Rs. 138/-
Other misc parts : Rs. 500/-(Oil, bolts etc etc)
Coldrinks (To beat the heat) :Rs. 20/-

@ Peter - How is the work coming along? I'm guessing you have finalized what you are keeping/removing from your bike.

Hey all,

Does the rtr 160/180 open type chain guard fit on the fiero f2/fx swingarm? I mean do the mounting holes line up with the bolts for plug and play?
I was thinking of getting one but don't want to modify by cutting or adding extra plates, etc.

Also, I think the leg guard of rtr 160/180 is a direct fit to fiero chassis mounts. If not, do let me know if any pipe bending is required for matching.
I was thinking of putting a new one so if this fits - I will source it.

Any info will be appreciated

Here the updated plan.

1. Buy the Bike: This should be happening today. - Done

2. General Service: Get the bike working as a stock bike should so I can ride and enjoy it for a while in stock form before doing any mods. This will also include as much de-rusting as possible of the chrome and paint touch up of painted parts followed by a polish. - Plan ditched

3. Front Disk Brake: As per this thread, I can either go for the F2 unit on the LHS or an Apache unit on the RHS, of course using the F2 hub as I would want to retain the spoked wheels. However I may also consider alloys if i can get a set cheap. What if I go with the Pulsar disk with the Pulsar fork lower tubes. Is it possible and more importantly is it cheaper than the F2 or Apache units? - Will start hunting for a Pulsar set up.

4. Fairing: The original fairing is missing and replaced by a round dome. My options are; Retain the dome, put an original fairing, or put some other fairing like that of the Flame or Apache. Please suggest. - Still have time for this. On hold for the moment.

5. Swingarm: This will be done only when the chain is due for changing. My options are the Victor GX, Victor GLX or Apache RTR 160 swingarms. Please suggest. How about the Honda Unicorn's with a monoshock conversion. - On hold for the moment.

6. Tachometer: I intend retaining the original speedo so want a separate tacho unit. Please suggest.- Already received the below unit.
[ATTACH]210674[/ATTACH]

7. Tyres: For the moment shortlisted the Michelin Sirac Street if I'm retaining the spokes. Anything better you can suggest? - Depends on the wheels I'll be using.

8. Alloys: If and only if something cheap comes by. How much does a set of Apache alloys cost. Can the ones from a Pulsar be fitted? Whats the cost? Any other options. Alloys means most certainly switching to 17" so tyres will need to be decided accordingly. - Will start hunting for a Pulsar set up for disk so will check for alloys too.

9. Big Bore: Either the Apache 180 or 200 bores and pistons or rebore with a Pulsar 220 piston. Either stock head with some mods or buy the head of the 180/200. Again here cost is a factor so need to select a cheaper option. - Have a spare Apache 150 Engine plus a spare 180 head. The stock piston and bore is gone so was thinking of reboring and fitting a Karizma piston.

10. BS29 Carburettor: From the Pulsar 200. - Can the stock jets be replaced with larger ones? If not then I'll change the carb.

11. Oil Cooler: Someone has already done it on an Apache here, so I'll just follow the same procedure. Not very expensive too. - Still have time for this. On hold for the moment.


12. Paint job: Most probably metallic blue with just the Suzuki and Fiero decals like the first Fiero. The Fiero is further to the rear as compared to the later models with the additional graphics (See photo). Second option is the same theme in black but with a contrasting chassis in orange/blue/red. - Getting the bike dismantled today so will decide shortly.


13. Clutch / Crankcase covers: This bike is a TVS so the LHS cover is blank and the RHS has TVS. Looking to replace these with the Suzuki ones (See photo). Where can I source them from? - Plan ditched as I'm using the Apache bottom.


14. 5-Speed Conversion: If and when I find an Apache Engine or at least the bottom half of it. This actually makes point no.12 pointless. - Have the Engine already.

Now of course this Plan of Action depends on various factors like cost, time, availability of parts and the right mechanics to execute the job. This project is not for me to have a really high performance bike (I'm reasonably satisfied with my humble Duke 390) but just to do what can be done to the Fiero and to keep me busy during my leave. Of course I can spend money and get all the jobs done but that's not the point. The idea is to do it in the most cost effective way. I plan do doing it in phases.

I have the stock head modified to match the 195cc,so i will post it's pics soon.

2. Big Bore: Tentatively decided on the RTR 180
- Bore kit (Bore, piston, rings and gaskets)
- Cam Chain tensioner
- Stock head to be matched on the lathe (can someone post a pick of a stock head and one matched to the 180 Bore)
- RTR head is another option (photo please so I can see the difference)

62mm bore= 175cc.(RTR160 bore kit)
62.5mm bore =177cc (RTR180 bore kit)
63.5mm bore = 183cc (CBZ classic piston)
65.5mm bore = 195cc (ZMA piston)
67mm bore = 204cc (P220 piston)