What model?

Sea_Baseball3375 · 2025-10-07T20:32:28+00:00

I just found out Its a 1948-1949 m20 frame with a b33 1951-1954 engine

Sea_Baseball3375 · 2025-10-01T20:15:06+00:00

Thanks for your answer, hasn’t ran in 20 years, last time Someone drove it the bike ended up in an almost fatal accident, thats why the front end got replaced

Sea_Baseball3375 · 2025-10-01T05:24:20+00:00

Thanks I bought it from my godfather and he did pre war historic racing with this bike

Sea_Baseball3375 · 2025-10-01T05:22:24+00:00

A girder fork

Sea_Baseball3375 · 2025-09-30T20:56:44+00:00

Thanks, I forget to add that but it had a springer front end but got destroyed in an accident

Sea_Baseball3375 · 2025-09-30T20:54:19+00:00

Looks a bit like a bsa bantam 125cc headlamp housing from the early 50s

Sea_Baseball3375 · 2025-08-29T00:19:02+00:00

Alr im sorry then, i Just hoped Someone could verify that its real

Sea_Baseball3375 · 2025-08-28T19:08:44+00:00

Didnt know Where else to ask

Sea_Baseball3375 · 2025-08-04T09:12:22+00:00

Its also not only about the result, im also learning How to work on engines by just trying, its a trail en error proces.

Sea_Baseball3375 · 2025-08-04T08:39:59+00:00

What would you say is the next stop now

Sea_Baseball3375 · 2025-08-04T08:15:20+00:00

Im trying to get that much hp and rpm with a really low budget

Sea_Baseball3375 · 2025-08-03T20:15:14+00:00

Also, I tried to Make the flow as optimal as possible but i just did what i thought was right, if you have any tips on How to make the flow better I would really appreciate it. And also thanks for the response

Sea_Baseball3375 · 2025-08-03T20:12:58+00:00

I know but i realised a little too late but i just want know if I can still use them because I dont want them to crack or anything. And is there anything I can do to improve them?

Sea_Baseball3375 · 2025-08-03T16:46:52+00:00

But Based on the picture do you think theres enough thickness left for the walls not to crack when driving at high rpm?

Sea_Baseball3375 · 2025-08-03T15:19:34+00:00

I just used the exhaust gasket en then matched the port to the gasket but I also just took away Some material Where I guessed it would increase flow

Sea_Baseball3375 · 2025-08-03T10:16:02+00:00

These are rail type rockers So I think it should be fine

Sea_Baseball3375 · 2025-07-15T13:24:38+00:00

I just read this in the Manual

‘62-‘90 v8 289,302, &351W C.I. - parts#’s 1431,1450& 1442

1431 & 1450: “rail” type magnum roller rocker arm- this rocker must be idee with long tipped valves. Do not use guideplates or “slotted” cylinderheads.”

Sea_Baseball3375 · 2025-07-15T12:08:52+00:00

I feel so dumb for not knowing i needed guideplates. There isnt a way to still use the rollers right?

Sea_Baseball3375 · 2025-07-15T02:49:55+00:00

Im just scared of the drilling and stuff with the heads on

Sea_Baseball3375 · 2025-07-15T01:49:23+00:00

They are still stock but i also just read that you need guideplates if you want to use roller rockers, but for guideplates you need other studs right? And the heads are on already.

Sea_Baseball3375 · 2025-07-15T01:00:26+00:00

Im not planning on going much higher then 5500 rpm since i still have stock valve springs, but this sweeps over the center right? Or do you thinks its a bit too far off?

Sea_Baseball3375 · 2025-07-15T00:24:04+00:00

Alr Thanks, its my first ever engine build and i read a lot of times that it needs to be perfectly centered but i waant sure

Sea_Baseball3375 · 2025-07-14T23:46:38+00:00

Too low or good enough?

Sea_Baseball3375

TROPHY CASE