Something Is Rotten in the Spyder engine

[retread]

I heard today about a mod you can install in the return line of the FI; increases pressure with engine speed. I'll check into it and post it. Seems like it would cure the lean out condition.

john

 

[docdoru]

Stage 2: You are running 12 PSI of boost at an altitude of 1000 feet. Rotax's static compression is 11 :1. At this boost level and altitude your effective compression ratio is 19.78 :1, and without altitude correction your compression ratio would be 19.98 :1.

 

[Bob Denman]

Stage 2: You are running 12 PSI of boost at an altitude of 1000 feet. Rotax's static compression is 11 :1. At this boost level and altitude your effective compression ratio is 19.78 :1, and without altitude correction your compression ratio would be 19.98 :1.[/QUOTE]

That sounds like a "Pop! Goes The Weasel..." just waiting to happen... :shocked:

 

[Dragracer]

As an Independent Mechanical Inspector (I'm the guy the extended warranty company sends to inspect the claim at the repair shop) I can vouch for your statement, Lamonster. Any performance modification pretty much voids your warranty. Same with suspension modifications, such as altering the original height, etc. Lights, air filters, wheels & tires (unless way oversize) have no effect on most warranties.

There's guys on here that are worried about voiding their warranty when they add LED lights, I'm pretty sure that adding a turbo would more than qualify for no warranty.

 

[retread]

Question for Doc....

Do you have a rising rate fuel pressure regulator? They go in on the return fuel line and restrict the return depending on the vacuum /pressure in the intake. This might be an answer to your top end lean out condition, just make sure you get one that's set up for turbocharging.

john

 

[docdoru]

Do you have a rising rate fuel pressure regulator? They go in on the return fuel line and restrict the return depending on the vacuum /pressure in the intake. This might be an answer to your top end lean out condition, just make sure you get one that's set up for turbocharging.

john

Yes, plus Walbro 225 High Pressure fuel pump and IWP 630 injectors. :thumbup:

 

[Firefly]

opcorn:

 

[docdoru]

Well, after so many months of try and failed, the IMPROVED and HEAVILY MODIFIED Rotax is ready to be tested (drag race) on the Silver Dream (2.15.2012). For me, 6 moths and 10 days was worth the wait.
I have great respect and admiration to :firstplace:...:

 

[dave01]

Doc, That video makes me dizzy watching it. Bring on the Silver Dream.....

 

[SteveMac]

Oh boy. This is gonna be good. Can't wait for some more videos!!!

Glad you are back on the Spyder Doc!

 

[NancysToy]

Outrageous! I have ridden and driven hundreds of drag races in my time, but that's the first one I ever did backwards. Sure looks different that way. Very cool! :thumbup:

Glad to hear you're back on the road again, Doru! :clap:

 

[Mo Lee]

Was that around 10 seconds? Sounds real good!:clap::clap:

 

[Bob Denman]

 

[spyder-dude]

Welcome back Doc. Hope to see you next month in Daytona!

 

[TuckMiddle]

Warranty

Interesting and educational exchange above.I've never gotten into that stuff, always had to get a house and all those everyday things. Lamonster, when I get the decals you sent the other day, I hope they won't void my warranty! I was already worried about the Spyder decals on the brake calipers. Put mine on with some Gorilla glue and the are now part of the bike forever.
I'm glad some of you do all this racing and speed stuff. It'll eventually drift through BRP's system and might very well produce some improvements for all of us. Keep up the good work and remember "somebody's gotta do it!" Did you see the 267 mph Bugger (Bugatti, I don't even know how to spell it) that was sent around on the internet this week? $1.7 million and 2 gallons a minute at max speed. Also I think it was $38,000 for tires for the 32 miles they ran it super fast. Makes a Spyder look real inexpensive.
:bowdown:
Tuck

 

[dave01]

Doc, these should do just fine in the new engine
Chrome and Ceramic.....Not your normal everyday pistons, thats for sure.....Cant wait to hear her fire up.

 

[docdoru]

While in Virginia I received this pictures of the new add-on:

 

[boborgera]

While in Virginia I received this pictures of the new add-on:

I give up what am i looking at!:dontknow:

 

[MikeinGA]

And now, the question: what's the difference between a turbo and a naturally aspirated Rotaxengine piston melt down? opcorn:

Doc,
The turbo pushes more air/gas mixture into the cylinder that will increase the pressure and causing more heat. Ever look into a water or water/alcohol mix mist in the intake, to help to cool the cylinder and piston.

Mike

 

[docdoru]

Doc,
The turbo pushes more air/gas mixture into the cylinder that will increase the pressure and causing more heat. Ever look into a water or water/alcohol mix mist in the intake, to help to cool the cylinder and piston. Mike

It is included in the new fuel management. More info's: send pre-signed non-disclosure agreement (basically that you don't disclose that to BRP) ...