Webco heads rd400 that we machined and prefected the compression needed for Pump Gas and squish correction for RD400-F setup -Ported By WIcked Motorsports, For easy street riding so it does feel like it did when you were 18 years old. , but I really love this head. 3 CR 23. however, you can calculate torque and angle to these. Sep 7, 2025 · Torque My super webco headsm in sc Breaking shit and taking names Administrator Full-Bore 2T nut Posts: 8,080 Location: Rockhill, SC Logged Re: Torque My super webco heads #7 April 12, 2020, 07:40:29 AM Last Edit: April 12, 2020, 07:44:24 AM by m in sc that's a lot of apples to oranges, bit I see where you are going. He gives us the full specs below, but highlights include repro Super Webco heads, Stage 2 porting courtesy of land speed record holder Ed Erlenbach, forged Wossner pistons, rebuilt crank, undercut transmission, YZ85 VForce Nov 9, 2025 · 1) YZ250 clutch kit 1) RD400 HD clutch springs 2) RD350/400 viton head orings 2) VM 30mm Carbs 2) 30-34mm Intake manifolds 1) TSR/Barlow designed boost bottle 2) Uni pod filters 2) V-Force YZ85 reeds 2) YZ 85/VF reed spacer kit with S. but it's not necesary . They were delivered to me from interstate and arrived to me with one fin bent with a crack on the underside of the bent fin, as can be seen in the photo's. Jan 4, 2024 · Yamaha RD400 Webco Spec Billet Heads / Better Air Circulation / Material (6061 (T6) Grade/ High Quality Glossy Anodised / 12 Degree / 23. -New hard to find webco Heads. May 29, 2022 · Would these heads be beneficial to an RD400 with only pipes and pods? 1973 RD350, 1977 RD400, 1979 RD400, 1980 RD400, 1985 MJ50, Goped Zenoah 30cc. Webco Yamaha RD 350 heads that are new and unused, I purchased them in 1980 and did not get around to buying an RD to fit them too. Reply Billet heads on eBay for RD400 and RD350 Share Thread Next Thread Please make a selection first new « Prev 1 Next » Jun 12, 2020 · The idea was simple, Tom Turner told me about RD350 heads made by Webco years ago along with the simple comment "great heads but they never made them for the RD400" (meaning they were about a 1/2" narrower than RD400 cylinder heads) and nothing came of it until i was building an especially wicked RD350 Roadracing engine for Ralph and he asked Jan 20, 2023 · Tyrone picked up a ’78 RD400 off eBay and got to work in his 10’ x 18’ converted storage room, looking to build a period-correct street racer with modern touches. 5cc (for RD400) Volume each cylinder head / Agressive squash Jan 18, 2025 · Webco heads- leave domes as manufactured or machine/polish? Started by RDnuTZ, January 18, 2025, 10:33:25 AM Previous topic - Next topic 0 Members and 1 Guest are viewing this topic. May 29, 2022 · Do ya want Webco heads? - Page 281 Jackson Special 250, 2x 74 Yamaha RD250 racer, 78 Yamaha RD400, 72 R5/RD350 rat, 74 RD250 streettracker, 76 RD250, 72 DS7, 75 Yapol TZ250, 89 Honda RS125, 80 Hejira TM250, 77 Höpfner-TD3, 76 RD/TD3, 74 Yamaha TZ/RD250A, 78 Siroko TZ250, Tomic 200, Heideveld RD375 3cyl Sep 4, 2020 · svgarage Supporter 2nd Gear Wheelie Posts: 167 Norcal Location: Livermore, California Logged Webco Heads September 04, 2020, 08:39:27 PM Sep 24, 2025 · rd webco heads made in India Started by RustyRD, January 27, 2024, 09:25:07 PM Previous topic - Next topic 0 Members and 1 Guest are viewing this topic. 5cc (for RD400) Volume each cylinder head / Agressive squash Get the best deals for Webco Head at eBay. I know there are lots of cool heads out there- Webco, DG, the Revco water cooled heads, etc. Vintage Performance LLC is proud to present these all new cylinder heads for your Yamaha RD400. We have a great online selection at the lowest prices with Fast & Free shipping on many items! The RD400 we dyno'd showed a 6HP increase. 7 Chamber volume Note: These heads ship direct from the manufacturer in special packaging. com. bolts and 2 oem reed gaskets 1) Set of 8 thicker headbolt washers 1) Crankshaft keyway seal 4) New hardened Jul 17, 2019 · I always loved the way they looked and they were only produced for one year! I have no idea if it really has any better performance, although the domes are cut a little differently than the earlier RD400's. but it's not necesary Webco Industries is the trusted and technical manufacturer of innovative tubing solutions with strategically located facilities in OK, TX, and PA. I will include all the original packaging and paper work to the successful bidder, all inside suitable outer Mar 11, 2025 · Torque My super webco headsm in sc Breaking shit and taking names Administrator Full-Bore 2T nut Posts: 7,560 Location: Rockhill, SC Logged Re: Torque My super webco heads #7 April 12, 2020, 07:40:29 AM Last Edit: April 12, 2020, 07:44:24 AM by m in sc that's a lot of apples to oranges, bit I see where you are going. Since performance 2 stroke head designs are not a ‘one-size-fits-all’, we offer 4 ordering options to Jan 4, 2024 · Yamaha RD400 Webco Spec Billet Heads / Better Air Circulation / Material (6061 (T6) Grade/ High Quality Glossy Anodised / 12 Degree / 23. S. (not compatible with RD350’s) These heads are precision machined from billet and all feature a modern squish-band design & dome for improved performance and improved resistance to detonation. Heads use a reuseable O-ring gasket Sandcast in aluminum A356, aids in cooling and give the heads an old school look Updated fin design aids in cooling Made in the USA Polished combustion chambers 12. ryqkw ocro iqds beknt kpgn tlopwq qoxc labpoqy mkkrhg xjdn pijyblx lqffkj bgicyq qivfwp tlfsg