Bought this 1972 R5 in 2014. Just now getting around to it. Previous owner was a hack. Really started to look into it and found it's easier and safer to do everything the right way. Ill update as I move along.
You can check out my other builds and events/rides on insta @lancasterlambretta
I have two sets of cylinders to work with. One has an old conversion to what I think is a tz reed cage? Cutting that and converting it to fit the v force. Bottom picture is comparing what I think is a stock rd350 cylinder to the weird conversion cylinder. You can see the standard boost port is wider in the stock cylinder than the weird reed cage conversion. Have to measure the port timings
Started teardown. Rear swing arm went to the powder coater. Rear wheel and hub went to local shop Service Pavilion to get relaced with ss spokes
Back from the shop and then I put it back together
nice. yeah, that tz reed cage thing was a big deal back in the day. i had a set of cyls like that, still have a set of rock hard tz manifolds from it i saved for .. no particular reason. i alwasy found it funny that you could actually do th same thing as a bolt on w flat head cap screws & an adapter..., but, i digress. the past is the past. you going to run those cyls? i also find it hilarious they ran the tz sized cage but chocked it down with the dual stage boysen reeds. lol. man those are a bottle neck.
Yeah, if everything turns out ok, I'd like to use them. They do have a tune on them. Also have a nice set of unused (as far as i can tell) old dg 350 heads to go with them. From what I've read, I'd have to have the combustion bowls reshaped for modern pump gas? True?
Yeah, do the combustion chambers. You have a nice start there.
Frame is back from the painter. Im happy with it. Have a solid plan for the motor and I got the DG heads back from being recut. Bought a new vitos crank. The old one was questionable. Using an rd 6 speed, tuned rd350 cylinders with the tz750 reed blocks, custom made intake manifolds (cant find tz ones that aren't hard as a rock), mikuni tm flatslides, weisco banshee pistons, DG heads, dyna s electronic ignition. Hoping to have a rolling frame by the time it gets cold..
R5 frame from painter
Nice! Looking good. :clap:
Who did you end up using for recutting the heads, Toomey?
I ended up using Economy cycle to recut the heads and o ring them. Really happy with the work, reasonable price and quick turn around. Good communication.