rascalion
Newbie
 Offline
Age: 61
Location: jackson, ca
Posts: 10
|
 |
« on: February 01, 2010, 09:41:43 AM » |
|
looking for advice with a blow thru carb set up for a turbo salt flat runner,,,any help would be greatly appreciated  |
|
|
|
|
Logged
|
|
|
|
|
Dean Los Angeles
|
|
« Reply #1 on: February 01, 2010, 11:31:00 AM » |
|
|
|
|
|
|
Logged
|
Just remember . . . It isn't life or death.
It's bigger than life or death! It's RACING.
|
|
|
|
Rchop
|
|
« Reply #2 on: February 01, 2010, 01:56:30 PM » |
|
I don't see a lot in those links that apply to your situation rascalion. Why don't you go into some more detail about what you want to set-up and why you want to use a blow-thru. I think if you are more specific, you will get some more detailed responses.
|
|
|
|
« Last Edit: February 02, 2010, 12:10:31 AM by Rchop »
|
Logged
|
Each unexpected discovery is first ridiculed, then objected to and finally considered self evident www.frsengineering.com#4836 A-PBF 750cc(complete) #765 A/G 650cc |
|
|
|
1212FBGS
|
|
« Reply #3 on: February 01, 2010, 03:32:55 PM » |
|
my advice don't do it.....
Kent
|
|
|
|
|
Logged
|
|
|
|
McRat
Hero Member
Offline
Age: 51
Location: Norco CA
Posts: 1339
Diesel Hotrodder
|
|
« Reply #4 on: February 01, 2010, 03:58:27 PM » |
|
Turbos can generate a lot of heat if you aren't intercooled, I wouldn't be surprised if you boil the fuel in the floatbowl. Pre-turbo is going to be easier to jet across the whole boost range.
But if you must, pretty much all you need to do is run the float bowl vent line into the boosted air side, not atmosphere. Make it secure, as the factory vent tube can pop off when boosted. Oh, and you need to make a vent fitting on top of the slide or it will go WOT when you hit boost. Plumb that into boost too. For safety reasons, I'd only use a carb that was "push-me-pull-you" or whatever the right name is. A CV carb would probably be a bad idea as well.
|
|
|
|
« Last Edit: February 01, 2010, 04:09:51 PM by McRat »
|
Logged
|
Pat and Kat McSwain - DT 1616 "Casper" 2005 GMC 2500HD Sierra 4x4 Duramax Diesel + Allison Transmission B/DT & A/DT record holder, El Mirage (163) & Bonneville (175) Best clocking 197.068 mph - Bonneville '09, 2.25mi www.duramaxdiesels.com |
|
|
John Noonan
Hero Member
Offline
Age: 45
Location: 6 X 200 club member: El Mirage 2 Club, Bonneville 2 Club, Australia 2 Club, Maxton, 2 Club, Mojave 2 Club, Bubs 201 Club
Posts: 3266
245 200+ mph time slips. 252 mph on a dirtbike
|
|
« Reply #5 on: February 01, 2010, 05:06:28 PM » |
|
Some guy named Toy did pretty good with one..and it was a kawapookie too..
John
|
|
|
|
|
Logged
|
On 9-27-08 we lost a great friend and fellow racer, he was the BEST, he helped anyone with anything at anytime. His name is Dave Owen and he will be missed by all that knew him and I am glad to have met him.
Seeing him at Bonneville during 2008 Speedweek was the tops, Dave was in awe of the salt and as usual was there helping out anyone who asked..simply put we lost a great man who will be missed by all.
J
|
|
|
Dakzila
Sr. Member
Offline
Age: N/A
Location: Sunny Southern Nevada
Posts: 311
|
|
« Reply #6 on: February 01, 2010, 07:09:54 PM » |
|
looking for advice with a blow thru carb set up for a turbo salt flat runner,,,any help would be greatly appreciated What bike is involved? Lots of info available on the older model Kawasaki and Suzuki four cylinder engines and blow thru turbo. Even through you can go this way (blow thru carb) using either electronic or mechanical injection seems to be a better way to go... Hilborn still sales the injectors for making the conversion on the above mentioned engines.. Buzz |
|
|
|
|
Logged
|
"Marred by indecision; vision is blurred, confidence deteriorates and progress stagnates"
"It's not about what you did.....It's about what you do!"
|
|
|
rascalion
Newbie
Offline
Age: 61
Location: jackson, ca
Posts: 10
|
|
« Reply #7 on: February 01, 2010, 08:42:07 PM » |
|
wow thanks to all for the responses,,,my limited knowledge of fuel injection and budget make using injection difficult for my first attempt...the bike in progress is based on an 883 sportster,,,am in the process of modifying/altering the frameand doing the headwork,,have pistons on order from Dan at nhrs,,a gt15 turbo to plumb and a dream.....any help is greatly appreciated
am not against fuel injection but am old school and kind of leary of it
|
|
|
|
|
Logged
|
|
|
|
rascalion
Newbie
Offline
Age: 61
Location: jackson, ca
Posts: 10
|
|
« Reply #8 on: February 02, 2010, 08:43:01 AM » |
|
could y'all recommend basic books on fuel injection,,,maybe reading a bit will help remove my apprehension
|
|
|
|
|
Logged
|
|
|
|
McRat
Hero Member
Offline
Age: 51
Location: Norco CA
Posts: 1339
Diesel Hotrodder
|
|
« Reply #9 on: February 02, 2010, 10:17:23 AM » |
|
Some guy named Toy did pretty good with one..and it was a kawapookie too..
John
The only benefit I can think of is you can use a smaller carb post-charger, (or use the factory carb(s) in the stock location) and save a little money. Not a lot of money, because you can sell you stock carb(s) to defray the cost of buying a single carb. Back when I had a turbo KZ650, we just bought a used Harley carb and made a manifold to replace the stock carbs. It gave more room, and the main jet was adjustable with a simple knob. |
|
|
|
|
Logged
|
Pat and Kat McSwain - DT 1616 "Casper" 2005 GMC 2500HD Sierra 4x4 Duramax Diesel + Allison Transmission B/DT & A/DT record holder, El Mirage (163) & Bonneville (175) Best clocking 197.068 mph - Bonneville '09, 2.25mi www.duramaxdiesels.com |
|
|
|
firemanjim
|
|
« Reply #10 on: February 02, 2010, 11:07:44 AM » |
|
Rascallion, not too hard to do on a Sportster,I ran blow thru on one of my Buells. Used a 42 Mikuni,ran boost lines to bowl vent and carb body. Had an Aerocharger on it,worked well--190 HP. Need a boost referenced fuel pressure regulator, an electric fuel pump that will put out at least 5 psi more than your projected boost. Fuel return line from regulator to tank. Is the GT-15 a ball bearing turbo--as HD engines do not have enough oil pressure for a plain bearing turbo--being a ball bearing engine.Carb had a special needle and seat for pressure available from Mikuni.And an intercooler would be good!
|
|
|
|
|
Logged
|
Bonneville 2001,2002,2003,2004,and NO stinking 2005,DLRA 2006, next?
Well,sure can't complain about 2008--6 records over 200 and 5 hats from Bonneville,Bubs, and El Mirage for the team!
|
|
|
rascalion
Newbie
Offline
Age: 61
Location: jackson, ca
Posts: 10
|
|
« Reply #11 on: February 02, 2010, 11:39:57 AM » |
|
Firemanjim: did you have any problems with the float collapsing under boost pressure? plan to only run about 10 lb. at first,,,do you recall the specs on the needle and seat....plan on using a separate oil pump system for the turbo,,unfortunately gt15 is not ball bearing,,,plan on intercooler and considering the possibility of water injection,not convinced about water yet.
|
|
|
|
|
Logged
|
|
|
|
John Noonan
Hero Member
Offline
Age: 45
Location: 6 X 200 club member: El Mirage 2 Club, Bonneville 2 Club, Australia 2 Club, Maxton, 2 Club, Mojave 2 Club, Bubs 201 Club
Posts: 3266
245 200+ mph time slips. 252 mph on a dirtbike
|
|
« Reply #12 on: February 02, 2010, 12:13:34 PM » |
|
From what I recall you need a #2.3 needle and seat for the HSR 42 Mikuni and the "A" needle as well, I seem to remember that is what I used on mine..and it worked great..call up Steve at Mikuni in sales/tech and he will get you what you need.
John
|
|
|
|
|
Logged
|
On 9-27-08 we lost a great friend and fellow racer, he was the BEST, he helped anyone with anything at anytime. His name is Dave Owen and he will be missed by all that knew him and I am glad to have met him.
Seeing him at Bonneville during 2008 Speedweek was the tops, Dave was in awe of the salt and as usual was there helping out anyone who asked..simply put we lost a great man who will be missed by all.
J
|
|
|
|
Rchop
|
|
« Reply #13 on: February 02, 2010, 03:40:37 PM » |
|
rascalion, do you have an intercooler yet?
|
|
|
|
|
Logged
|
Each unexpected discovery is first ridiculed, then objected to and finally considered self evident www.frsengineering.com#4836 A-PBF 750cc(complete) #765 A/G 650cc |
|
|
Glen
Global Moderator
Hero Member
Offline
Age: 76
Location: South West Utah
Posts: 4930
SCTA/BNI timer 1983 to 2004,Semi Retired,.
|
|
« Reply #14 on: February 02, 2010, 04:09:53 PM » |
|
WOW.....John has recall  |
|
|
|
|
Logged
|
Glen  South West, Utah |
|
|
|
