984 replies to this topic

[NOSBandit]

My vx has a toyota 3sgte engine fitted in it.

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[NOSBandit]

What gearbox are you using?

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[Aerodynamic]

the Honda EP3 (Civic type R) NPQ3 gearbox.

[NOSBandit]

It looks like it has been used for that gearbox before.

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[Mattias]

I actually run a Rotrex (C38) and use a Tial QRJ recirculating BOV. I think it's 38 mm. Before that I used two standard 20 mm VAG BOV's, which you can have for next to nothing second hand. That worked well too, the only issue was the piping. And yes, you should recirculate. Blowing off to free air is fun for a while, but it's like you have a giant hairdryer in the back of the car, as the Rotrex generates a lot of air only depending on RPM. The BOV is not flipflopping, but beware that you should take the weakest valve spring. Tial offers a special spring for blower applications.

 

That weak spring is intended for screw superchargers I believe, didn't find much info on that, I run a 50mm tial with turbo springs and the vacuum in the manifold is just as much as on a turbo setup so no difference. The spring is there to hold it shut during boost and with a Rotrex you will have more boost on top of the vacuum to open the BOV at part throttle so I imagine it would even work with the stiffest spring.

 

Here is how it sounds with open 50mm, gets annoying really fast: https://www.instagra.../p/CEhLJ7THNC5/

 

And here is with recirc 50mm: https://www.instagra.../p/CFXog-KnpHC/

[Mattias]

 

I actually run a Rotrex (C38) and use a Tial QRJ recirculating BOV. I think it's 38 mm. Before that I used two standard 20 mm VAG BOV's, which you can have for next to nothing second hand. That worked well too, the only issue was the piping. And yes, you should recirculate. Blowing off to free air is fun for a while, but it's like you have a giant hairdryer in the back of the car, as the Rotrex generates a lot of air only depending on RPM. The BOV is not flipflopping, but beware that you should take the weakest valve spring. Tial offers a special spring for blower applications.

 

That weak spring is intended for screw superchargers I believe, didn't find much info on that, I run a 50mm tial with turbo springs and the vacuum in the manifold is just as much as on a turbo setup so no difference. The spring is there to hold it shut during boost and with a Rotrex you will have more boost on top of the vacuum to open the BOV at part throttle so I imagine it would even work with the stiffest spring.

 

Here is how it sounds with open 50mm, gets annoying really fast: https://www.instagra.../p/CEhLJ7THNC5/

 

And here is with recirc 50mm: https://www.instagra.../p/CFXog-KnpHC/

 

 

Forgot to say that if you buy new, choose the softest spring as it might give a smoother tip in. But if you buy used just test and see how it feels before wasting money on different spring rates. The TiAl Springs are not cheap but you can get them at GIK turbo.

[Aerodynamic]

Thank you Mathias.

The videos were really educating, I will go for a recirculating BOV.

 

Thanks, Per

[Aerodynamic]

I want to remove my carbon canister to save weight and give space for my supercharger installation.

 

So I´m tinking to do it as in the sketch below..

The question is what to do on the end. And with the EVAP solenoid on the engine,

Either just let the hose out in free air and plug the EVAP solenoid on the engine.

Or as in the sketch, Any other option?

 

I don´t know how the EVAP solenoid on the engine works and what it does.

 

 

 

Br, Per

[Arno]

Just let the tank breathe to the atmosphere and vent it by running a hose up to the fuel filler area or backstay on the rollover bar and then back down the backstay to end up near the rear wishbone at the bottom (so basically a big inverted 'U' and put a plug/cap on the evap solenoid on the Honda throttlebody. Also disable the evap function in the Honda ECU.

 

The Newton TPV8 (if that's the one?) should also have a small spring in it to cut/reduce evaporation venting and my experience has been that on the Elise/Speedster there's little to no fuel smell even with just a hose up-and-down to the rear wheel/subframe area and the normal roll-over vave fitted when parked in a hot garage. So this should work fine too.

 

Bye, Arno.

[Aerodynamic]

Thanks, Arno.

 

Could I removed the complete EVAP solenoid and blank it?

 

Br, Per

 

Just let the tank breathe to the atmosphere and vent it by running a hose up to the fuel filler area or backstay on the rollover bar and then back down the backstay to end up near the rear wishbone at the bottom (so basically a big inverted 'U' and put a plug/cap on the evap solenoid on the Honda throttlebody. Also disable the evap function in the Honda ECU.

 

The Newton TPV8 (if that's the one?) should also have a small spring in it to cut/reduce evaporation venting and my experience has been that on the Elise/Speedster there's little to no fuel smell even with just a hose up-and-down to the rear wheel/subframe area and the normal roll-over vave fitted when parked in a hot garage. So this should work fine too.

 

Bye, Arno.

 

[Arno]

Normally yes. As long as you disable it in the Honda ECU it should not throw an error code if it's not present.

 

In some Hondata Kpro/Kmanager revisions it seems there's a bug/feature that still causes it to throw an OBD error when it's disconnected even when disabled in the software.

 

In those cases it still triggers the 'open circuit' error on the purge solenoid circuit when it's left disconnected.

 

In that case you can just leave it connected to the wiring harness as it won't be used anyway or install a small resistor with the same general value as the solenoid coil in the connector and tie it away.

 

Bye, Arno.

[Aerodynamic]

When gear is engaged?

 

Br, Per

I have Quaife and both wheels turn the same way, but I did not check that they went the opposite way before I mounted Quaife 

 

[Aerodynamic]

Working in the garage and thought I had the posistion of the supercharger fixed, knowing I can rotate the compressor housing 60 degree.

I thought I had the situation under control and the design of the Rotrex bracket was "ready"

Well I was wrong. 60 degree is quite a lot and it was either to much or to little

 

 

What the heck I just modify my boot lid cover, but didnt really want to do that.

 

So I had to tilt the supercharger body.

and now it looks better.

And I can actully close the lid. yay  :-)

 

 

But will it pass the fuel rail?

 

Its tilted 13 degree at the picture compared to ground plane. So its within the max/min of +/-15 degree recommended by Rotrex.

 

I printed this last night. Tilting the supercharger 14 degrees (1 degree more than previous bracket) and lifting it up 2mm for some extra margin.

Hope its the last variant. Then it will be some adjustments of the design before going into metall.

 

I also got this little thingy yesterday.

   :-)

 

Our cars are really really small inside.

 

But I will get in somehow.

 

Take care

Per

Edited by Aerodynamic, 04 February 2021 - 08:45 AM.

[NOSBandit]

Working in the garage and thought I had the posistion of the supercharger fixed, knowing I can rotate the compressor housing 60 degree.

I thought I had the situation under control and the design of the Rotrex bracket was "ready"

Well I was wrong. 60 degree is quite a lot and it was either to much or to little

 

 

What the heck I just modify my boot lid cover, but didnt really want to do that.

 

So I had to tilt the supercharger body.

and now it looks better.

And I can actully close the lid. yay  :-)

 

 

But will it pass the fuel rail?

 

Its tilted 13 degree at the picture compared to ground plane. So its within the max/min of +/-15 degree recommended by Rotrex.

 

I printed this last night. Tilting the supercharger 14 degrees (1 degree more than previous bracket) and lifting it up 2mm for some extra margin.

Hope its the last variant. Then it will be some adjustments of the design before going into metall.

 

I also got this little thingy yesterday.

   :-)

 

Our cars are really really small inside.

 

But I will get in somehow.

 

Take care

Per

The SQS shifter is a tight fit in these cars

[Aerodynamic]

Do you have any experience in this or know any other Vx220 Lotus Elise person who have done it?

 

Br, Per

 

 

 

I also got this little thingy yesterday.

   :-)

 

Our cars are really really small inside.

 

But I will get in somehow.

 

Take care

Per

The SQS shifter is a tight fit in these cars

 

 

[Aerodynamic]

Nos bandit, do you have some pictures of your SQS installation?

 

Br, Per

[NOSBandit]

It's not the easiest to see but here you go, I fixed a mounting plate so I could use the one fixing holes


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[Aerodynamic]

NOSBandit where do you have your mounts for your shifter cables?

Did you manage to get them between your seats?

 

Is your shifter knob as high as the lower edge of the radio?

 

Are you on facebook?

 

Br, Per Axblom

[NOSBandit]

My shifter cable mounts are between the seats, they touch both seats.
Gear knob is slightly higher then the bottom of the radio cut out.
Yes I am on Facebook, what's your profile name I'll pm you

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[NOSBandit]

I don't have my car stuff on facebook as I share the profile with my wife, it's all on Instagram.

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