I bought my bodge 18 months ago. Went in with my eyes open - knew it would need work to make it safe and make it go, but it was going cheap enough to be worth the risk.
Did a few thousand k's on the motor as it came - only engine upgrade was to add vespatronic and sort out the bodge that held the carb only held on by one stud (!).
Its been jumping out of gear, so it was time for a new shifting cross. That was an excuse to do a proper rebuild.
I found some boggyness, and fixed it methodically, now it's rebuilt to a standard, not a price.
Didn't quite finish it before I headed off on vacation, but I'll be back home on friday, and need to kick it over and get it going again.
Build spec on the new motor (Its a 3 port late super, new seals and bearings):
Vespatronic (1.6 with a lightweight alloy fan CNC'd to fit)
23/64 Malossi Primary
Series Pro Flowed/balanced Conrod, valve timing: 138į/6į post TDC
Malosi Clutch rebuild kit
Sip Road 2
Dellorto 24/24 (rebuilt)
Pollini Venturi for 24/24
DRT Airbox cover spacer
Still need to blue the casing and open it out for the 24/24 .
Before the rebuild I was running a Spaco 20.20d jetted with a 28-120, a 60 choke and a 160/E3/92- also have a pollini Venturi for it if its a better bet, will sell it if not. Timing on the vespatronic was currently at 21 BTDC at 1000 rpm (this was with the bodgriginal asian stainless steel hotdog style exhaust.
I'm also fitting a SIP speedo with CHT. I've trimmed back a fin on the DR head, and drilled and tapped it to take the sensor directly.
I'm a 2 stroke neophyte, so I'm looking for advice. I'm thinking of going with an initial settings for the new motor of:
4% pre mix to run in
23 degrees BTDC at 1800rpm
130 main .
Ive got jets kit from 105-140, figured start fat and work back. Also have a BE4 and BE5
I'd genuinely like advice if theres something better I should be trying.
Last edited by Gt6MK3 on Tue Jan 09, 2018 4:51 am; edited 1 time in total