Datsun Roadster Forum-311s.org

Man, talk about diving right in! This should be a hoot to watch! I know you said something about "no hood scoop" but I think it might be cool to have the right, through the hood air induction system for the throttle bodies. I think the 280zx turbos had some hood scoops that might give some use or styling ideas. Keep us posted as you go!

Gregs672000 wrote:Man, talk about diving right in! This should be a hoot to watch! I know you said something about "no hood scoop" but I think it might be cool to have the right, through the hood air induction system for the throttle bodies. I think the 280zx turbos had some hood scoops that might give some use or styling ideas. Keep us posted as you go!

Yea trying to keep at it, easy to let things slide and time gets away. Not sure I remember some of the hood scoops I'll have to google some.

With the engine mounted sideways and just no room for tuned length headers I think the best way is to just start out with a turbo and a shorty header.

Ak

Really wanted to make a tuned header to leave N/A or turbo later on, but there is just no room. The only way I could think of is a outside the frame rail header, but ditched that idea, this way will be cleaner and more tidy, and I'll have plenty of power for this application.

Ak

Are these engines frequently turbocharged? What are you gonna do for fuel management and enrichment for the turbo? What's the compression ratio on those engines? Should be wild if you can keep it together!

Loved the CAD system

P.S. Ok, looked up the compression ratio: 12.5 to 1! Fuel enrichment with a turbo should be interesting, or BOOM!

There are a ton of turbo systems for those bikes.. Here is one, on the dyno..

[youtube][/youtube]

"Happy new year" lol

The only question is if you can get an exhaust short enough to get this..
[youtube][/youtube]

Yes Greg as Mike pointed out there is a lot of turbo systems out there for this engine. I'm leaving the tuning of this beast to my friend who builds turbos for sleds and motorcycles. On the gen 2 motors (2008 +) all you have to do is low compression pistons, rods, valves and head studs and your good for 18psi at 400HP on pump gas. My plan is to get this running on 6 to 8 psi, get the bugs worked out and go from there if I need more, at 8 psi she's rated for 300 at the flywheel. One thing I should note is I'm not pioneering anything others have been putting these motors in cars for a long time, I just might be the first to put one in a Datsun Roadster is all. I got the shaft drive and slave clutch cylinder from a company in the UK called MK Sports cars. Other companies make complete transmissions with wider ratios, lock-up style clutches ect. There are quite a few Hayabusa Smart cars out there as well, just youtube them.

Ak

Holly cow Batman! This is gonna be a wild ride!

So will this have a standard, car-type transmission or bike-style sequential?

Alvin,

I will be using the sequential 6 speed of the bike, forward for upshift and back for down shift. There will be a separate lever for activating the reverser, not sure where I'm going to put it - thinking of under the dash on left side, kind of like some of the pull style parking brakes are at.

Ak

^oh man I'm curious what theme will be. Will shifter look like an F1 cars' or stock? Exciting build!

In the Smart cars they look like the old rally slap shifters.. whack it forward to upshift. pull it back to down, no clutch needed, just blip the throttle to get it to pop..

Alvin wrote:^oh man I'm curious what theme will be. Will shifter look like an F1 cars' or stock? Exciting build!

Theme? What I have in mind is a stock looking roadster until you fire it up. I'm new to building for asphalt as I came from building SxS and Mini-buggies. I'm not sure on what a F1 shifter looks like, could you post a pic of what your thinking? Again I'm up for any new suggestions or ideas.

RCMike wrote:In the Smart cars they look like the old rally slap shifters.. whack it forward to upshift. pull it back to down, no clutch needed, just blip the throttle to get it to pop..

Paddle shifters are very nice some guys build them for their sand rails, but I think I'll miss the traditional shifting.

Ak

I thought with the bike engine and transmission the theme would be more"techie" like having a Stack gauge cluster along with the shift paddles, ala F1 cars. Anyways if you do want the stock look it would be badass to use the OEM shifter/boot/surround but have the lever/knob operate in the up/down fashion...wicked!

Alvin,

In the past I've liked stock looking cars that are far from stock. In envisioning this build that is what I was after but your right the gauge cluster will give it away if you look inside. Since I'm in Alaska there are not many car shows so I'm at a creative disadvantage of what is out there. I have yet to fit the gauge in the dash but with the new engines I what to keep the OEM gauge for the codes. It should look pretty good with the flat dash. With that said I will rewire the complete car around the bikes wiring harness, but incorporate the Roadsters switches, turn signal ect. And yea I'm trying to keep the stock shifter knob in the stock location.

Ak

Continuing on with the exhaust header.

Ak