Valkyrie 370Z vs. Porsche GT3 Cup!

Elmo370z · 04-09-2017, 10:58 AM

Quote:

Originally Posted by BGTV8

Brian

I can tell you that with the JWT rod/piston combo, the bottom of the piston "just" kisses that crank counter-weight and we had to machine the counterweight about 2mm to be really happy - that meant re-balancing the entire rotating assembly which cost the project some time and unplanned spend.

Apart from that, it looks mint .... the proof will be when we get it on the dyno (will run the engine first time on our hub dyno).

It is an extended process because we are fitting the Jenvey ITB (including DBW throttle motors - 1 for each bank) on the OEM engine first, before we swap engines .... so it takes time as my project is not the shop's bread and butter - I get to use quiet time in their schedule tokeep costs down - a bit like you working on a shop project which means revenue forgone rather than customer work that pays the bills.

Wait so you're doing a DWB itb set up?

BGTV8 · 04-09-2017, 06:59 PM

Quote:

Originally Posted by Elmo370z

Wait so you're doing a DWB itb set up?

I was convinced by Mr Motec (Richard Bendell) to stay with DBW rather than cable pull ... means we can run our own (adjustable) traction control and launch control strategies .........

So ..... now having a pair of Jenvey BDW stepper motors - one on each bank. Is more complex but ultimately better.

Project has slowed down because I am working remotely - 2000km flight on Monday, back on Friday and I am so time poor these days.

Engine is built, just needs a concentrated week to put ITB on the OEM engine and get the Motec working and then we can swap engines.

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