New Hawk on the way! Prep and Mod ?'s

[Skyd]

I keep changing my mind on where I wanna go with this thing. HAHA, It's gonna be mostly a back road and trail bike with occasional commutes to work on nice days.


BUT - I have settled on the pumper carb so I'll get one of those on the way. I think I'm going to go ahead and do the TT250 head gasket as well...it's easy and cheap enough.



The exhaust is the one I'm hung up on, I like the idea of keeping the bike on the quieter side so as to not attract unwanted attention. Can I swap in a different head pipe, or head and mid pipe and keep the stock muffler? Or is that going to require fabrication and I'm just as well to gut the stock header?


Think I want bars and bar risers too - I did that on my DRZ400 and it made a world of difference, especially when standing. I'm gonna start a build thread here as soon as I make up my mind, still waiting for tracking/shipping confirmation. It's only been 3 days though so hopefully I'll hear today.

[TxTaoRider]

If you can find a crf230f exhaust it might be what want.
Or cut a section out of your exhaust at the converter and remove it and weld it back up. Or buy the exhaust from DOHC that he has for sale and experiment on it in case it doesn't turn out well.

[China Rider 27]

My HAWK is set up for off road. I bought the upgraded stainless exhaust but took the CAT outa the stock only and I like the quiet in a trails bike so the new exhaust sits in a box. You can always upgrade later or put on the new exhaust but keep your old exhaust to go back too.

[Deckard_Cain]

Originally Posted by Megadan

...

Understand that I state the PZ30B as a true upgrade simply due to it having the accelerator pump. The VM26 doesn't offer any benefit other than being really easy to dial the tune in with. The PZ30B, having the accelerator pump, offers an improvement to the way the bike rides, but does have an extra step in setup. Getting it dialed in and running with the jets is no different than the VM26, but there is just less info out there to more or less plug and play immediately.

Now, main jet sizes will translate across, so the only thing that will require a little extra effort is the pilot jet, but even there the size range is generally going to be around a 38 to a 40 (give or take obviously).

Bore diameter is larger though, yeah? So there is the additional air volume flow capability, if one's engine can pump that much air to make use of it (PZ30B vs VM26).

[Megadan]

Originally Posted by Deckard_Cain

Bore diameter is larger though, yeah? So there is the additional air volume flow capability, if one's engine can pump that much air to make use of it (PZ30B vs VM26).

No, the PZ30/30B and VM26 both have the same bore diameters and venturi size in the body. There is zero difference in airflow.

The advantage/upgrade comes from the PZ30B having an accelerator pump.