Vision Function Turbokit Prototype - LotusTalk

Jermaine@VF · 10-09-2009, 08:08 AM

VF Turbokit Prototype

It has been a year since we release the availability of our Lotus Elise/Exige Intercooled Supercharger Kit. We are finally at a point where we feel we can start posting info on the next progression of mods. When designing this kit we started from a specifications we felt would be a necessity for a Street/Track Kit. We are just getting into the testing phase of all of this. So there will be info posted here as we progress.

The Base Kit

It is only right that we carry over our intercooler from our supercharger kit. It has worked very well on the SC kit and now it will be used with our more efficient turbo option. The GT28RS will be the baseline turbo we will use. Honestly it is very common on small displacement engines in the single turbo form and often used in high horsepower dual turbocharger applications. For the sub 400whp, this will be the answer. Use of the new Tial 38mm External Wastegate will be used to help control boost in conjunction with an electronic boost controller. This will help us dial in a boost curve similar to a Supercharged car or a more traditional turbocharged boost map.

At this point we have no ETA for the kit.

Here are a few pictures of the kit coming together.

We are just getting started!

Jermaine~

LordZ · 10-09-2009, 09:15 AM

Sweet. Can I add this to my stage3 SC from you.

Moto44 · 10-09-2009, 09:19 AM

For those of us already considering your supercharger/intercooler option, what are the pros and cons of the turbo charger vs. the other?

MaineLotus · 10-09-2009, 09:20 AM

Nice, keep the progress pics comming.

QuadCamSix · 10-09-2009, 10:00 AM

Very clean! I like the way the waste gate runs right into the downpipe. How is the clearance between the turbo and intermediate axle? Big thumbs up here!

ephc · 10-09-2009, 10:57 AM

Very cool!
have you thought about how to deal with the extra heat coming off the system? can you say whats in the plan for that?

Demonized · 10-09-2009, 12:36 PM

Oh wow... I was just warming up the wife for the VFII...

Might have to wait for this, the boy racer in me needs another turbo'd car.

And if it's not $12,000 like the FF kit, that'd be even better....

Jermaine@VF · 10-09-2009, 01:07 PM

Quote:

Originally Posted by LordZ

Sweet. Can I add this to my stage3 SC from you.

Sure but it won't work

Quote:

Originally Posted by Moto44

For those of us already considering your supercharger/intercooler option, what are the pros and cons of the turbo charger vs. the other?

I personally think both kits have a place in the market.

Quote:

Originally Posted by QuadCamSix

Very clean! I like the way the waste gate runs right into the downpipe. How is the clearance between the turbo and intermediate axle? Big thumbs up here!

The clearance is actually pretty good. I'll post pics later my camera has died.

Quote:

Originally Posted by ephc

Very cool!
have you thought about how to deal with the extra heat coming off the system? can you say whats in the plan for that?

We will be coating all of the exhaust pipes on the kit to help with the heat to start. Maybe adding a few heat sheilds along the way.

Quote:

Originally Posted by Demonized

Oh wow... I was just warming up the wife for the VFII...

Might have to wait for this, the boy racer in me needs another turbo'd car.

And if it's not $12,000 like the FF kit, that'd be even better....

I can promise the kit will not cost 12k. We will do our best to feed your demon ways.

darkSol · 10-09-2009, 02:04 PM

Quote:

Originally Posted by Jermaine@VF

I can promise the kit will not cost 12k. We will do our best to feed your demon ways.

Jermaine has quote of the day!

Viggen · 10-09-2009, 02:23 PM

my guess is

pro- broader powerband, more power/torque
cons- heat

great to see a turbo option coming our way....

It would be interesting to see how a GT28rs compares to a T3-60 or a Holset turbo. The Holset's seem to be cheaper then the GT line & offer similar (sometimes better) spoolup, power etc.

Darth G-F · 10-09-2009, 04:38 PM

Tuned by CharlieX??

cstetter · 10-09-2009, 04:52 PM

So when will we see the first guy asking for an upgrade path from the FF275 kit to the VF turbo kit?

Carpe | Viam · 10-12-2009, 06:58 PM

Sooo happy this is coming along. Do keep us posted.

Westrock · 10-13-2009, 05:49 AM

Big question.....vent to atmosphere BOV option considering the MAF setup? I guess you could do a blow through MAF solution, but that would add more cost.

The great thing about turbos is all the drama.....its great when the BOV and wastegate vent to atmosphere.

Viggen · 10-13-2009, 02:09 PM

wastegate going to atmosphere is fun at first.... then it gets old.... very old!!

ALways worrying about my policeman hearing the wg dumping becomes a PITA over time.

I do prefer the BOV & turbo spooling over s-charger whine

Sunsetronics · 10-13-2009, 02:37 PM

I Very happy to see this project
If the price Is right I'm interested

over40 · 10-14-2009, 08:09 AM

Interesting. I Like the idea of a power adder that does not add parasitic loss.

Maybe I can get another kit to store in my garage next to the BWR SC that I have not had time to install yet.

mrcarcrazy · 10-14-2009, 08:37 AM

Quote:

Originally Posted by over40

Interesting. I Like the idea of a power adder that does not add parasitic loss.

Maybe I can get another kit to store in my garage next to the BWR SC that I have not had time to install yet.

Send it to me. I'll get right on installing it! I'll even take off a few days from work!

over40 · 10-14-2009, 09:30 AM

Quote:

Originally Posted by mrcarcrazy

Send it to me. I'll get right on installing it! I'll even take off a few days from work!

Hahaha, yep, probably should do that. Perhaps when the snow starts to fall and I have to stop driving the car.

DWebb · 10-14-2009, 09:52 AM

I'm pretty sure there will be parasitic loss. I can't speak as to how much loss, but certain there will be some.

It requires HP to compress the air, 8 psi is 8 psi no matter how you compress it.
8 psi is pretty much a fixed resistance.

Whether it's produced by a belt and pulley, or forcing heated gasses across a turbine is merely a matter of efficiency. I'd have to imagine that it would cost around 20ish hp off the gross to put up 8psi at 30lbs/min.

There are some freakishly smart people on here that will surely let us know how to figure this out. I hope!

10-09-2009, 08:08 AM	#1 (permalink)
Jermaine@VF Crazy Car Guy Join Date: Apr 2008 Posts: 203	Vision Function Turbokit Prototype VF Turbokit Prototype It has been a year since we release the availability of our Lotus Elise/Exige Intercooled Supercharger Kit. We are finally at a point where we feel we can start posting info on the next progression of mods. When designing this kit we started from a specifications we felt would be a necessity for a Street/Track Kit. We are just getting into the testing phase of all of this. So there will be info posted here as we progress. The Base Kit It is only right that we carry over our intercooler from our supercharger kit. It has worked very well on the SC kit and now it will be used with our more efficient turbo option. The GT28RS will be the baseline turbo we will use. Honestly it is very common on small displacement engines in the single turbo form and often used in high horsepower dual turbocharger applications. For the sub 400whp, this will be the answer. Use of the new Tial 38mm External Wastegate will be used to help control boost in conjunction with an electronic boost controller. This will help us dial in a boost curve similar to a Supercharged car or a more traditional turbocharged boost map. At this point we have no ETA for the kit. Here are a few pictures of the kit coming together. We are just getting started! Jermaine~ __________________ www.VisionFunction.com - Site Under Construnction - Stay Tuned

10-09-2009, 09:19 AM	#3 (permalink)
Moto44 Back in the Saddle Join Date: Jun 2006 Location: Illinois Posts: 4,808	For those of us already considering your supercharger/intercooler option, what are the pros and cons of the turbo charger vs. the other? __________________ If nobody ever died doing it, how much fun could it be?

10-09-2009, 09:20 AM	#4 (permalink)
MaineLotus Parts scattered about... Join Date: Feb 2005 Location: Maine Posts: 1,385	Nice, keep the progress pics comming. __________________ My car is modified.

10-09-2009, 10:00 AM	#5 (permalink)
QuadCamSix Testing your next engine! Join Date: May 2006 Location: Asheville North Carolina Posts: 193	Very clean! I like the way the waste gate runs right into the downpipe. How is the clearance between the turbo and intermediate axle? Big thumbs up here! __________________ The Lotus Elise is not a very practical car, but it could probably be considered the most practical motorcycle ever made!

10-09-2009, 12:36 PM	#7 (permalink)
Demonized NOT ßANNED! Join Date: Aug 2008 Location: Colorado Posts: 1,546	Oh wow... I was just warming up the wife for the VFII... Might have to wait for this, the boy racer in me needs another turbo'd car. And if it's not $12,000 like the FF kit, that'd be even better.... __________________ 2005 Saffron Yellow Elise, Katana Supercharger, LSS Wheels, 2Bular exhaust & cat, rear panel delete, Cup Airbox, Volt / Oil temp gauge, Ohlins double adjustable coilovers, Dual Oil Coolers, S111 RTD Brace, Moroso Oil Pan, MicroMirror, S111 "V-Force" Harness bar, Manly Engine Mounts, Odyssey PC680 & RLS Bracket, Saikou Michi OCC, CF Scoops, CF Bootlid, CF Front Lip. Last edited by Demonized : 10-09-2009 at 12:47 PM.

10-09-2009, 09:15 AM	#2 (permalink)
LordZ 06 S280 Join Date: Apr 2004 Location: Houston, TX Posts: 1,318	Sweet. Can I add this to my stage3 SC from you.

10-09-2009, 10:57 AM	#6 (permalink)
ephc Registered User Join Date: Sep 2008 Location: T.O Canada Posts: 54	Very cool! have you thought about how to deal with the extra heat coming off the system? can you say whats in the plan for that?

10-09-2009, 02:23 PM	#10 (permalink)
Viggen Registered User Join Date: Dec 2006 Location: Dayton, Ohio Posts: 345	my guess is pro- broader powerband, more power/torque cons- heat great to see a turbo option coming our way.... It would be interesting to see how a GT28rs compares to a T3-60 or a Holset turbo. The Holset's seem to be cheaper then the GT line & offer similar (sometimes better) spoolup, power etc. __________________ Exige S summer 2010.... hopefully

10-09-2009, 04:38 PM	#11 (permalink)
Darth G-F Liberté! Join Date: Oct 2003 Location: Quebec City Posts: 1,442	Tuned by CharlieX?? __________________ 2006 Ronin Supercharged Lotus Elise 2008 BMW 328Xi

10-09-2009, 04:52 PM	#12 (permalink)
cstetter Nothing witty to say Join Date: Oct 2005 Location: San Jose, CA Posts: 1,443	So when will we see the first guy asking for an upgrade path from the FF275 kit to the VF turbo kit?

10-12-2009, 06:58 PM	#13 (permalink)
Carpe \| Viam Aeternum Vale Join Date: May 2007 Location: Redwood City, CA / Lake Forest, IL Posts: 89	Sooo happy this is coming along. Do keep us posted. __________________ *Carpe Viam "Seize the Road"*

10-13-2009, 05:49 AM	#14 (permalink)
Westrock Haxord but mine Join Date: Sep 2005 Location: Fort Worth Posts: 1,340	Big question.....vent to atmosphere BOV option considering the MAF setup? I guess you could do a blow through MAF solution, but that would add more cost. The great thing about turbos is all the drama.....its great when the BOV and wastegate vent to atmosphere. __________________ -David 2006 Storm Ti Exige + VF Stage 2 Vision Function Supercharger Install Thread Stereo Harness Info \| Exige with no wing??

10-13-2009, 02:09 PM	#15 (permalink)
Viggen Registered User Join Date: Dec 2006 Location: Dayton, Ohio Posts: 345	wastegate going to atmosphere is fun at first.... then it gets old.... very old!! ALways worrying about my policeman hearing the wg dumping becomes a PITA over time. I do prefer the BOV & turbo spooling over s-charger whine __________________ Exige S summer 2010.... hopefully

10-13-2009, 02:37 PM	#16 (permalink)
Sunsetronics Registered User Join Date: Nov 2005 Location: Beverly Hills Posts: 52	I Very happy to see this project If the price Is right I'm interested

10-14-2009, 08:09 AM	#17 (permalink)
over40 Registered User Join Date: Jan 2005 Location: Hudson Valley,NY Posts: 189	Interesting. I Like the idea of a power adder that does not add parasitic loss. Maybe I can get another kit to store in my garage next to the BWR SC that I have not had time to install yet.

10-14-2009, 09:52 AM	#20 (permalink)
DWebb Registered User Join Date: Aug 2008 Location: Pleasanton Texas Posts: 184 Images: 20	I'm pretty sure there will be parasitic loss. I can't speak as to how much loss, but certain there will be some. It requires HP to compress the air, 8 psi is 8 psi no matter how you compress it. 8 psi is pretty much a fixed resistance. Whether it's produced by a belt and pulley, or forcing heated gasses across a turbine is merely a matter of efficiency. I'd have to imagine that it would cost around 20ish hp off the gross to put up 8psi at 30lbs/min. There are some freakishly smart people on here that will surely let us know how to figure this out. I hope! __________________ Yes, that's very nice, Thank You.

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