The New Werks B5 .21 Racing Engine
#8536
#8537
#8539
The Pro engine has a ceramic rear bearing, lightened and silicon filled crank, black case, billet rear back plate and a 5% lighter cooling head. It rev's a bit faster, has a bit more top end, is a bit more fuel efficient, feels a bit more punchy etc. etc. It is not night and day different but it is a step up from the standard engine.
#8540
Tech Apprentice
Joined: Apr 2012
Posts: 71
The Pro engine has a ceramic rear bearing, lightened and silicon filled crank, black case, billet rear back plate and a 5% lighter cooling head. It rev's a bit faster, has a bit more top end, is a bit more fuel efficient, feels a bit more punchy etc. etc. It is not night and day different but it is a step up from the standard engine.
#8542
Tech Apprentice
Joined: Apr 2012
Posts: 71
so alex in your opinion do think it would be worth spending 80.00 more for the pro version? Thanks very much for input.
#8543
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#8545
#8547
Awesome, welcome aboard! If you ever have any questions their is a wealth of information on this thread covering everything from break in (post 1) to tuning, problem solving etc. etc. etc. Also if you every have any questions do not hesitate to contact me directly or post on the forum!
#8548
This will seem like a noob question. I run the xb9 stock gearing. I am planning to run it overdrive style for the fronts like the xray 808 series. So now it is 40T front and back bevels. I will be running 40T front and 43T rear so the fronts overdrive.
Question is will this badly affect the motor, like get it over hot or so. I know that 4 pole motors hate being spun without enough load and get overheated. Is it the same here as well, or will it just be a leaner tune to balance it out the lesser work the engine has to do?
Question is will this badly affect the motor, like get it over hot or so. I know that 4 pole motors hate being spun without enough load and get overheated. Is it the same here as well, or will it just be a leaner tune to balance it out the lesser work the engine has to do?
#8549
Joined: Jul 2004
Posts: 2,637
This will seem like a noob question. I run the xb9 stock gearing. I am planning to run it overdrive style for the fronts like the xray 808 series. So now it is 40T front and back bevels. I will be running 40T front and 43T rear so the fronts overdrive.
Question is will this badly affect the motor, like get it over hot or so. I know that 4 pole motors hate being spun without enough load and get overheated. Is it the same here as well, or will it just be a leaner tune to balance it out the lesser work the engine has to do?
Question is will this badly affect the motor, like get it over hot or so. I know that 4 pole motors hate being spun without enough load and get overheated. Is it the same here as well, or will it just be a leaner tune to balance it out the lesser work the engine has to do?
Your center diff will thin out quicker, since the internals will be constantly working and heating up the fluid when all 4 wheels are on the ground.
#8550
Imo, I doubt that overdrive gearing would have an adverse effect on your engine. I ran over/underdrive gearing for a few gallons last year, and i didn't notice any overheating issue. Temp and humidity will affect your tune more than any change in load from overdriving.
Your center diff will thin out quicker, since the internals will be constantly working and heating up the fluid when all 4 wheels are on the ground.
Your center diff will thin out quicker, since the internals will be constantly working and heating up the fluid when all 4 wheels are on the ground.
Love the way that drives for twisty bits.



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