Print Page - Rd400 frame fabrication question.

Title: Rd400 frame fabrication question.
Post by: rd400greenhorn on October 12, 2020, 06:30:51 AM

Hi guys
So, i have a rd400 frame Which had been modified to fit a rz350 lc engine
But it came with the matching number rd400 engine as well.. Woule be nice if they could be together again and do a stock matching number rd

But because the lc engine was in the frame it had been cut and modified, some bracket was removed etc.

Question is, anyone had similar or tried to repair a frame?
This Will require fabrication the left side frame bracket and weld on the the frame.

Iam thinking regarding having the engine to sit right in the frame

Anyone with tips or ideas

Title: Re: Rd400 frame fabrication question.
Post by: m in sc on October 12, 2020, 10:26:54 AM

youd need a donor frame to steal the parts off of. sounds like a huge pain in the ass to me, since the integrity of the originality is already shot. BUT, me, id swap the lower cradle tubes. lots of fab and cleaning.

Title: Re: Rd400 frame fabrication question.
Post by: rodneya on October 12, 2020, 10:37:38 AM

Post some photos so we can see the mods done

Title: Re: Rd400 frame fabrication question.
Post by: rd400greenhorn on October 12, 2020, 11:14:32 AM

...

Title: Re: Rd400 frame fabrication question.
Post by: RDFL on October 12, 2020, 03:59:13 PM

Probably better off getting another frame, and selling the modded one.

Title: Re: Rd400 frame fabrication question.
Post by: rd400greenhorn on October 12, 2020, 04:14:46 PM

Yeah kind of the conclusion i came to My self.. To bad now i had the engine fitting that frame

Title: Re: Rd400 frame fabrication question.
Post by: RDFL on November 08, 2020, 05:42:17 PM

You might be interested in this. - https://www.ebay.com/itm/YAMAHA-RD350-complete-engine-31K-Gearbox/114464496998?hash=item1aa69d9d66:g:R4kAAOSw5w5fiGA6

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The 2-Stroke Garage => Turning Wrenches => Topic started by: rd400greenhorn on October 12, 2020, 06:30:51 AM