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R1 Carbs (lots of pics)


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#121 VintageRice

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Posted 14 December 2011 - 10:52 AM

Read this entire thread and most of your questions will be answered. It's either in the thread or linked to it. Also google"bike carbs" and search it on YouTube.

40mm carbs (r1 gsxr) are what u want. Anything smaller might run into reduced CFM issues. Research.

This hasn't been done as much as say like webers or mikunis, so figuring out your setup and tuning is up to you. If your not confident, dont do it. Or get a really smart, generous friend and buy beer.

#122 pope_face

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Posted 14 December 2011 - 11:29 AM

Vintage: I suspect that post was partially directed to me as well... I've done some research, and I guess I answered my own question in that post regarding bore sizes. I wasn't sure about using smaller carbs with individual runners, but looking at the bore sizes of the Datsun carbs (like the Weber), it makes sense that it won't work.

I could use multiple, smaller carbs on an intake plenum, instead of individual carbs per cylinder, but I don't think there's be any benefit over running single or dual sidedrafts, and the cost would be comparable to the R1 carbs anyway.

However, I will contribute to the thread by posting this:

Complete Guide To Installing R1 Carbs On A Car..

It's a PDF file I found by searching "R1 carbs on car throttle position sensor"... I think it's the first link. It looks pretty complete to me... A list of what you need, how to install the carbs, tuning, teardown and rebuild, everything including pictures. It even gives suggestions on jets.

And thanks VintageRice... If you hadn't called me out on it, I probably would've asked about the TPS instead of searching, and never would've found the PDF, and would still be asking daft questions... :rolleyes: :unsure:
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The author of the above post is not responsible for any damages, injury, scarring (emotional, physical, or otherwise), mental issues, or death due to any actions, thoughts, or feelings caused by the aforementioned post. Advice, thoughts, and opinions are given on an as-is, where-is basis, and the author gives no guarantees, express or implied. All information should be used with caution... If you don't know, don't do it!

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1972 Datsun PL-521... "Meghan" (The Parts Donor)
1997 Subaru Impreza OBS... "Mishka" (The Daily)

#123 Stupid_fast

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Posted 14 December 2011 - 12:37 PM

Vintage: I suspect that post was partially directed to me as well... I've done some research, and I guess I answered my own question in that post regarding bore sizes. I wasn't sure about using smaller carbs with individual runners, but looking at the bore sizes of the Datsun carbs (like the Weber), it makes sense that it won't work.

I could use multiple, smaller carbs on an intake plenum, instead of individual carbs per cylinder, but I don't think there's be any benefit over running single or dual sidedrafts, and the cost would be comparable to the R1 carbs anyway.

However, I will contribute to the thread by posting this:

Complete Guide To Installing R1 Carbs On A Car..

It's a PDF file I found by searching "R1 carbs on car throttle position sensor"... I think it's the first link. It looks pretty complete to me... A list of what you need, how to install the carbs, tuning, teardown and rebuild, everything including pictures. It even gives suggestions on jets.

And thanks VintageRice... If you hadn't called me out on it, I probably would've asked about the TPS instead of searching, and never would've found the PDF, and would still be asking daft questions... :rolleyes: :unsure:


A very useful guide! Thank you!

I have run out of funds and have to get my suspension sorted out before I continue with the R1 swap, but I will post here when I finish it.

I like the new classifieds better.


#124 pope_face

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Posted 14 December 2011 - 12:58 PM

A very useful guide! Thank you!

I have run out of funds and have to get my suspension sorted out before I continue with the R1 swap, but I will post here when I finish it.


No worries, I knew it'd help someone... It'll help me, that's for sure. Perhaps Zuum can chime in here and mention any differences between his swap and this one.

And if you need some funds you could always sell the R1's to me, and I'll put them to good use... :D
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"It's a machine of death! It's a Kavorkian scarf..."

The author of the above post is not responsible for any damages, injury, scarring (emotional, physical, or otherwise), mental issues, or death due to any actions, thoughts, or feelings caused by the aforementioned post. Advice, thoughts, and opinions are given on an as-is, where-is basis, and the author gives no guarantees, express or implied. All information should be used with caution... If you don't know, don't do it!

1970 Datsun L521... "Madeline" (The Project)
1972 Datsun PL-521... "Meghan" (The Parts Donor)
1997 Subaru Impreza OBS... "Mishka" (The Daily)

#125 Jester

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Posted 08 January 2012 - 05:04 PM

Just read through this entire thread again. I still love the idea of these carbs on a nice L motor.
That last link was good to see posted. I had a link on my other computer that committed suicide.

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#126 datzenmike

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Posted 08 January 2012 - 05:09 PM

I would love to try this on a 2 liter.
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#127 Jester

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Posted 08 January 2012 - 11:47 PM

Ya, or a 2.3 Posted Image

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#128 pope_face

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Posted 12 January 2012 - 04:48 PM

I'd be happy to have this on a 1.6L... I'm still waiting to find the right (read: cheap) set though. I still need my engine though... Once I get that, I might be a little more excited about getting this set up.
Fil
"It's a machine of death! It's a Kavorkian scarf..."

The author of the above post is not responsible for any damages, injury, scarring (emotional, physical, or otherwise), mental issues, or death due to any actions, thoughts, or feelings caused by the aforementioned post. Advice, thoughts, and opinions are given on an as-is, where-is basis, and the author gives no guarantees, express or implied. All information should be used with caution... If you don't know, don't do it!

1970 Datsun L521... "Madeline" (The Project)
1972 Datsun PL-521... "Meghan" (The Parts Donor)
1997 Subaru Impreza OBS... "Mishka" (The Daily)

#129 DADZSUN

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Posted 02 April 2012 - 05:14 AM

I've wanted to add to this discussion for quite some time, but wanted to make sure I got the basics sorted out and got the car running first.

I'm quite pleased with how easily the car fired right up. :-)

Bogg Brothers manifold, 1.6 jets (OEM 1.6L engine), 3 3/4 turns out on the idle mixture screws.


DADZSUN_Small.jpg

1972 Datsun 510


#130 Stupid_fast

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Posted 02 April 2012 - 11:40 AM

Hey, how much was that manifold, and can you have another one made and shipped?

Everyone I've talked to has said either they cant make it for me, or its going to be ridiculously expensive.
Thanks.

I like the new classifieds better.


#131 datzenmike

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Posted 02 April 2012 - 11:47 AM

Geez what's the idle set at? Sounds like fast idle with choke on.
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#132 Z chopper

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Posted 02 April 2012 - 12:10 PM

hmmm bogg brothers web site seems to be down

LSHCCOMNAIWEDA, which translates to: laughing so hard coke came out my nose and I wasn't even drinking any.
 

Your Datsun will never get mad if you enjoy driving another car even if younger than she is.
Your Datsun never has a headache.
Your Datsun doesn't mind if you want to drive her at 3 AM.
Your Datsun won't get upset if you let a friend drive her.
Your Datsun can be driven and enjoyed all month long.
Your Datsun won't take you to court for alimony if you get rid of her.
Your Datsun doesn't mind if you want to drive her in public.
Your Datsun doesn't need flowers before letting you put the key in the ignition.

wanted thread http://community.rat...us-other-stuff/

build thread _________________________________


#133 VintageRice

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Posted 02 April 2012 - 03:31 PM

I've wanted to add to this discussion for quite some time, but wanted to make sure I got the basics sorted out and got the car running first.

I'm quite pleased with how easily the car fired right up. :-)

Bogg Brothers manifold, 1.6 jets (OEM 1.6L engine), 3 3/4 turns out on the idle mixture screws.

http://www.youtube.com/watch?v=MRxSImfd0bA&feature=channel


Nice mang! I'm working on drawing up my intake flange for my R1 carbed KA24e right now in a CAD program. Going to get it cut soon. Then I can build my manifold and get er runnin!!

Now, we need a 0-60 video. Do it. do it now.

Was the choke on in that video? If not, turn down the idle. Did you leave the stock bike jetting for the idle jets????

#134 VintageRice

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Posted 02 April 2012 - 03:42 PM

Vintage: I suspect that post was partially directed to me as well... I've done some research, and I guess I answered my own question in that post regarding bore sizes. I wasn't sure about using smaller carbs with individual runners, but looking at the bore sizes of the Datsun carbs (like the Weber), it makes sense that it won't work.

I could use multiple, smaller carbs on an intake plenum, instead of individual carbs per cylinder, but I don't think there's be any benefit over running single or dual sidedrafts, and the cost would be comparable to the R1 carbs anyway.

However, I will contribute to the thread by posting this:

Complete Guide To Installing R1 Carbs On A Car..

It's a PDF file I found by searching "R1 carbs on car throttle position sensor"... I think it's the first link. It looks pretty complete to me... A list of what you need, how to install the carbs, tuning, teardown and rebuild, everything including pictures. It even gives suggestions on jets.

And thanks VintageRice... If you hadn't called me out on it, I probably would've asked about the TPS instead of searching, and never would've found the PDF, and would still be asking daft questions... :rolleyes: Posted Image



Awesome link man, thanks a bunch!!

:thumbup: :thumbup: :thumbup:

#135 jesusno2

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Posted 02 April 2012 - 04:44 PM

I've wanted to add to this discussion for quite some time, but wanted to make sure I got the basics sorted out and got the car running first.

I'm quite pleased with how easily the car fired right up. :-)

Bogg Brothers manifold, 1.6 jets (OEM 1.6L engine), 3 3/4 turns out on the idle mixture screws.

http://www.youtube.com/watch?v=MRxSImfd0bA&feature=channel







Sounds quite lean to me. I bet it had a terrible hesitation off idle.

#136 DADZSUN

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Posted 03 April 2012 - 09:12 AM

That was an initial video with very little tuning. I've since dropped the idle and synced the carbs which has really smoothed things out, including that carb closest to the rad with a cough.

He chock was not on in that video.

I'll forward Steve Bogg's email tonight along with more details.

Price for the carbs was their standard $200 pounds if i recall.

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1972 Datsun 510


#137 DADZSUN

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Posted 03 April 2012 - 01:44 PM

OK, I've had a chance to upload a newer video (below). Lower and smoother idle, carbs are synched etc...

I can't get any more effective tuning/videos until a replacement top hat for my front coilover and new windsheild seals (~ 2 weeks).

To answer a few questions:
  • 1.6 jets replaced the stock jets. This size is for a stock 1.6L engine. There are more tuning options to richen the mix if required (adjusting the needle circlip) and even drill out the jet some more. These jets are apparently the same as Weber DGV jets
  • The man you want to contact is Steve Bogg (boggbrothersltd@btconnect.com). He's pretty good about replying to his email. I've sent an OEM manifold to him and he's made a jig for additional future builds. He also still has the original manifold.
  • Manifold cost is £200, jets are £10 for 4, shipping to me in Canada was expensive £60. Their airfilter is £100 and the carb cable kit is £10 I believe (I don't have either but would like to eventually).
  • I got my carbs for a little over $100 USD. Try to get the 'joins' (connector hoses) and clamps with your purchase. You'll need them.
  • I'm still in the discovery phase, I have no throttle/chock cables hooked up yet but have a few ideas and will share my success/failure when I get the time and parts.

http://www.youtube.com/watch?v=xcZcX_ElsBw&feature=youtu.be


Below is some helpful info on the parts of the carbs. Some of this may be obvious for you but I wanted to get everything documented just to be sure:

Picture #1 (below)
  • Pink circles are the idle mixture screws. If covered (mine were, see yellow circles in picture below), get a 3mm drill and enlarge the hole then screw a self tapping screw into it and with mole grips firmly on the screw tap the grips with a hammer and the plug will come right out exposing the screws. Screw them all the way in and then 3 3/4 turns out.
  • Red circles are vents for the diaphragms and can be left as they are.
  • Yellow circles are float bowl vents and must be left open
  • Green circles are actually for running water through the carbs to prevent icing
  • Orange circles is throttle and bracket
  • Blue circle is the chock and bracket
Posted Image


Picture #2 (below)
  • Red circle is the pilot jet and doesn’t need drilling or enlarging just make sure you can see daylight through it.
  • Purple circle is the ‘flexi tickover adjuster’, basically a screw which manipulates the master carb.
  • Orange circles individual throttle adjustment screws. The three other carbs are controlled by the master carb but can be individually adjusted for synching
  • Green circle is the fuel
  • Turquoise circle (beside the red circle) is the DVG jet, basically the main jet.
Posted Image

DADZSUN_Small.jpg

1972 Datsun 510


#138 VintageRice

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Posted 03 April 2012 - 09:17 PM

Very nice. Can't WAIT o hear mine fire up!!!

any idea's on a baseline main jet sizing for a 2.4L ? ?

If a 1.6L gets a 1.6 but a l20b gets a 1.8.....then what does a 2.4 get?

#139 Stupid_fast

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Posted 04 April 2012 - 06:20 AM

@VintageRice, Someone please correct me if I'm wrong, but dont the DGV jets stop at a 2.00? If so you can just get a ton of spare DGV jets and some 2.10, 2.20, 2.30 drill bits and widen out those jets for the larger engine.

I like the new classifieds better.


#140 Tristin

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Posted 04 April 2012 - 06:28 AM

@VintageRice, Someone please correct me if I'm wrong, but dont the DGV jets stop at a 2.00? If so you can just get a ton of spare DGV jets and some 2.10, 2.20, 2.30 drill bits and widen out those jets for the larger engine.


Well not knowing if there is some crazy formula to figure out jet size, you can use simple math. Using the numbers provided, a 2.4L would require 2.0 size jets. Now there could be a non-linear function of air/fuel consumption warranting larger ones, but if its linear than 2.0 is all thats needed.

4 doors ..... no whores :crying: