Hey Guys, In this video i touch base on the all new Gen4 721 Engine talking about the new features and how I think its improved performance. #redsracing #spencerrivkin #amain
My sons building his 4.1 and I’ve purchased this engine. Can you please share your Venturi size and run time with the VP 30% Also is the clutch you are using and AE or Reds clutch Thanks for your help
SR uses the 30% VP Pro blend (not tessmann) which has 9% caster oil. In winter 7.0 as weather goes up you can go 7.5 or 8. He started on a AE clutch all 1.0 springs, he also has liked the Protek Clutch with the same setup... that's a really tiny difference you might try later, u can run the kit for now.
They run a P3 in winter, so l would say 80F and below... then this summer he has gone to P4 for all the hot outdoor races. He uses the reds plugs which are TS3 and TS4.
