Will this run

[Jazzy]

Lambretta barrel,

exhuast 180 degrees
inlet 130
transfers 117

what do ya recon.

[jonny snatchsniffer]

it will run, the inlet and transfers are a little low tho for the exhaust timing so it will be a bit peaky

[fred]

think 130 inlet must be a typo,sure it's not 150?
personally i'd prefer more transfer timing,but that's just me perhaps.
fred

[Jazzy]

a bit off the piston might help then

ps this is for a straightliner

[tarmac tickler]

if you are going sprinting mate i would say those port timings are extremely conservative, even more conservative than maggy thatcher!!!

[Jazzy]

if you are going sprinting mate i would say those port timings are extremely conservative, even more conservative than maggy thatcher!!!

can you point us in the direction of somthing a bit more Nick Clegg then

[Special X]

190 exhaust
130 Transfer
158 Inlet

Wouldn't be over the top for sprinting

[tarmac tickler]

an experimentl iron barrel going on the dyno at the run to the shires this weekend..

exhaust 202
transfers 150
inlet (forgot to measure it)
gear box gt200 46/15
will post results sunday

[jonny snatchsniffer]

a bit off the piston might help then

ps this is for a straightliner

a bit off the piston will help but it would be better to work the inlet so it has more port time area
widen it and lower the inlet but leave a few mm so the piston skirt covers the port id also go with around 165 withe inlet
trouble is gonna be getting the transres up to about 130 ish