LW IQR Crank in 800 CFI-2???

richracer1

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• Jan 23, 2015

• #1

Anyone done this, found several threads but no after install reports.

What is required to install the LW race crank in 2014 800 cases???

Will it operate the oil pump?

Are the rods that come with it compatible with the 800's 70mm stroke???

Different PTO/Mag side bearings?

 

S

Spaarky

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• Jan 23, 2015

• #2

Oil pump .. yes

believe so on the rods..


other tech stuff not sure.

Durability seems to be fine. There is just a lack of inertia with the new crank that you need to tune for. It takes completely different set ups. Some rave about it, some don't like it, and for some(me) the verdict isn't in yet. I don't have one, just around a few.

I was all ready to do one this fall, and I was told to wait a year, for more testing.

 

S

snopromod

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• Jan 23, 2015

• #3

Can anyone confirm if it's manufactured by fugi or is it a mape crank?

 

richracer1

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• Jan 23, 2015

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To those that did this, did you have to alter the fuel map after doing this??

 

Last edited: Jan 23, 2015

S

Spaarky

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• Jan 23, 2015

• #5

Too many things changed at once, to give you a accurate answer. Plus they are T sleds...

 

richracer1

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• Jan 23, 2015

• #6

Got the word, it is a direct swap for the stock 800 crank - good news

Now, my big concern is will it require tinkering with the fuel map I have?
The map maker doesn't think the little extra case volume will effect the fueling requirements, but, obviously, will not say for certain for obvious reasons.

 

S

snopromod

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• Jan 23, 2015

• #7

snopromod said:

Can anyone confirm if it's manufactured by fugi or is it a mape crank?

Click to expand...

How come no body can answer this question? I've tried researching it and can't seem to find good solid information.

 

KAWGRN

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• Jan 24, 2015

• #8

All the cranks from the race dept are Fuji and yes it appears you need to modify the fueling

 

mountainhorse

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• Jan 24, 2015

• #9

For those that may wonder WHY a crank would alter fueling needs...

The LW crank allows more volume in the case as there is less material on the crank, in the case. The engine breathes and pumps differently because of that change.







.

 

richracer1

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• Jan 24, 2015

• #10

mountainhorse said:

For those that may wonder WHY a crank would alter fueling needs...

The LW crank allows more volume in the case as there is less material on the crank, in the case. The engine breathes and pumps differently because of that change.

Click to expand...

That kinda what I was thinking too.