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Author Topic: food for thought fabr  (Read 5876 times)

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Offline dsrace

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Re: food for thought fabr
« Reply #15 on: January 31, 2019, 08:32:31 AM »
i dont know the comp ratio of that motor but if you read the notes on the video and that from the company the turbo kit comes from......17 psi on 91 octane! an efr 6258 should work quite well on a busa or i should say it will work quite well!  :D enemy
« Last Edit: January 31, 2019, 08:44:36 AM by dsrace »
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Online fabr

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Re: food for thought fabr
« Reply #16 on: January 31, 2019, 12:26:35 PM »
Maybe I'm missing something and I haven't looked at the specs on that turbo but if it works well on an always in boost 949cc engine why would it work well on a 1300cc engine that will not always be in boost. ???
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Offline Enemy

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Re: food for thought fabr
« Reply #17 on: January 31, 2019, 12:52:39 PM »
Controllable by the throttle pedal is why  ;)
Just kidding (kinda) but if I were looking to have a turbo spool yesterday, this is the series to do it, supports between 250 to 450hp (need to log the shaft speed if you take it that far though) and it is 30 years newer than my current turbo design. This is with a .64 AR turbine housing. Many busa guys like to go much larger series and a bigger AR for the big end but we don't use the busa like that, at least I don't. And not looking for over 400hp, not needed.. Been talking to a Busa powered road race car guy with this turbo, he loves it, says it can get a bit twitchy coming into boost but he learned to drive through it and use better waste gate control. I found a new/used 6258 for a damn fine price, gunna give it a shot! Currently running a 6758 on a 2.3 in the Ranger, wow is it a great turbo compared to the others I have played with on the truck.
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Offline dsrace

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Re: food for thought fabr
« Reply #18 on: January 31, 2019, 01:14:41 PM »
Quote from: fabr on January 31, 2019, 12:26:35 PM
Maybe I'm missing something and I haven't looked at the specs on that turbo but if it works well on an always in boost 949cc engine why would it work well on a 1300cc engine that will not always be in boost. ???

your were but enemy explained it  ;) enemy stopped by with my new used 6258 efr he has yet to return  rofl rofl
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Online fabr

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Re: food for thought fabr
« Reply #19 on: January 31, 2019, 05:13:51 PM »
When would you expect the busa to spool that turbo and with what compression/boost?
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Offline dsrace

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Re: food for thought fabr
« Reply #20 on: January 31, 2019, 05:51:35 PM »
the rzr specs....didn't realize they were 2 cyl's and rev limiter factory is set at 8800 but speed governed ( not a surprise and good thing) so i guess at 72 mph stock or 8800 which ever comes first. so i am wondering what would drive a turbo better, the drive from a 925 cc 2 cyl or 1299 cc 4 cyl? based on same rpms and no i don't know what the flow rate of the the 2 cyl heads are. just a thought is all.

busa
   1,299 cc (79.3 cu in), 4-stroke inline-four, liquid-cooled, DOHC, 16-valve, Keihin/Denso fuel Injection, wet sump
Bore / stroke   81.0 mm × 63.0 mm (3.19 in × 2.48 in)
Compression ratio   11:1



2017 POLARIS RZR XP TURBO EPS

ENGINE/TRANSMISSION

Engine type Liquid-cooled, 8-valve, DOHC 4-stroke twin

Displacement 925cc

Bore x stroke 93mm x 68mm (x2)

Compression ratio 9.0:1

Lubrication system Wet sump

Additional cooling Auto fan

Induction Turbocharged, 48mm EFI (x2)

Starting/back-up Electric/none
« Last Edit: January 31, 2019, 06:01:19 PM by dsrace »
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Online fabr

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Re: food for thought fabr
« Reply #21 on: January 31, 2019, 07:06:45 PM »
FWIW,I have not given even a seconds thought to what I will do with the busa when it gets power upped.  Have anyone given thought to twin turboing a busa with small turbos for super quick spool?
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Online fabr

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Re: food for thought fabr
« Reply #22 on: January 31, 2019, 07:11:59 PM »
Hmph,I just googled it and apparently it is done. Now to read up on it.
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the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Online fabr

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Re: food for thought fabr
« Reply #23 on: January 31, 2019, 07:43:53 PM »
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but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

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Offline dsrace

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Re: food for thought fabr
« Reply #24 on: January 31, 2019, 09:29:40 PM »
that is crazy! wow is all i have to say and truly the sky is the limit!!
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Online fabr

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Re: food for thought fabr
« Reply #25 on: January 31, 2019, 09:48:53 PM »
I'm thinking durability is the limit?
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"There can be no divided allegiance here.  Any man who says he is an American,
but something else also, isn't an American at all.  We have room for but one
flag, the American flag... We have room for but one language here, and that is
the English language... and we have room for but one sole loyalty and that is a
loyalty to the American people."
Theodore Roosevelt 1907

-----------------------------------------------------------
 " You have all the right in the world to believe any damn thing you'd like, but you don't have the right to demand that I agree with your fantasy"
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