Author Topic: Fuel injection conversion (edit) fixed a few things  (Read 166807 times)

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Offline J.Webster Designs

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #600 on: February 10, 2017, 06:08:16 PM »
I will give some hints... modern rubber, oil in frame, ohlins, Brembo, Alpina Carbon Matrix Tubeless, Titanium.....
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Offline timbo750

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #601 on: February 11, 2017, 11:15:54 AM »
I will give some hints... modern rubber, oil in frame, ohlins, Brembo, Alpina Carbon Matrix Tubeless, Titanium.....

That sounds very interesting, will you be doing a build thread? I hope so, Please.

Offline Retro Rocket

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #602 on: February 11, 2017, 03:02:40 PM »
I will give some hints... modern rubber, oil in frame, ohlins, Brembo, Alpina Carbon Matrix Tubeless, Titanium.....

Hmmmmm, extensive frame mods or a completely custom built frame....sounds interesting, you've got my attention.... ;D ;)
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Offline J.Webster Designs

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #603 on: February 11, 2017, 04:53:25 PM »
timbo - I am sure I will do a build thread on that bike as well. It's hard for me to keep up with my threads though. So I am sure some sort of thread will happen, but it may not be a very thorough thread.

Retro - I am thinking completely custom frame, and swingarm.
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Offline timbo750

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #604 on: February 11, 2017, 05:43:46 PM »
Justin, just the basics and steps are enough sometimes but always plenty of photos

Offline J.Webster Designs

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #605 on: February 11, 2017, 07:07:12 PM »
Timbo - I will make sure that it all goes down in some form. haha.
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Offline Syscrush

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #606 on: February 23, 2017, 09:14:16 AM »
Syscrush, The TB's that I am using are 40mm. They will support plenty of power at that size. I have plans on building this motor pretty stout as Retro has described in his plan.
I understand. My question is if they're too big. I expect that if you put a set of 40mm CV carbs on that bike, it would be very difficult to get the carburetion dialed in - although I could be wrong.

On EFI setups are there issues associated with going too big on the TB ID? I know that if the injectors are too big it can be hard to tune for idle and part-throttle, but for airflow maybe it doesn't matter.
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Offline dragracer

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #607 on: November 28, 2022, 11:42:33 PM »
Anyone have updates on their EFI systems. I know it's an old thread but still relevant today.

Online Don R

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #608 on: November 29, 2022, 09:44:28 AM »
 Carbs rely on velocity and vacuum to pull the fuel into the air stream, fuel injection doesn't, so a big throttle body isn't as big a problem as an oversized carb. So you are correct, airflow isn't as big of a deal with efi.
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Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #609 on: November 29, 2022, 11:20:28 AM »
I'd bet Larry Hays would help with any questions. I may have his number.
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Offline dragracer

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #610 on: November 29, 2022, 05:23:06 PM »
Jerry, I'm fairly certain Larry is running mechanical fuel injection on his bike, not EFI. I may be wrong but it Doubtful he knows much about a full electronic fuel injection system. It was a good thought nevertheless.  My current plan is to put EFI on the new 4.60 index project bike using a Maxx ECU system. I was curious about how the forum members made out on the SOHC 750 setup.

Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #611 on: November 29, 2022, 06:08:20 PM »
Jerry, I'm fairly certain Larry is running mechanical fuel injection on his bike, not EFI. I may be wrong but it Doubtful he knows much about a full electronic fuel injection system. It was a good thought nevertheless.  My current plan is to put EFI on the new 4.60 index project bike using a Maxx ECU system. I was curious about how the forum members made out on the SOHC 750 setup.

And you are correct. Old school FI.

Doesn't seem like we ever get much feedback on the electronic conversions the guys do.
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Offline grcamna2

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #612 on: November 29, 2022, 07:23:43 PM »
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Offline dragracer

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Re: Fuel injection conversion (edit) fixed a few things
« Reply #613 on: November 29, 2022, 07:44:39 PM »
Jerry, I'm fairly certain Larry is running mechanical fuel injection on his bike, not EFI. I may be wrong but it Doubtful he knows much about a full electronic fuel injection system. It was a good thought nevertheless.  My current plan is to put EFI on the new 4.60 index project bike using a Maxx ECU system. I was curious about how the forum members made out on the SOHC 750 setup.

And you are correct. Old school FI.

Doesn't seem like we ever get much feedback on the electronic conversions the guys do.

I think I'll start a thread when I begin installing the electronic EFI on my 4.60 index dragbike project. Unfortunately some of what I'll be doing will entail using individual Lectron carbs converted to use fuel injectors and not a rack of throttle bodies from a modern bike like those previously outlined in the beginning of this thread. Plus I won't be utilizing a charging system as required  for street riding. The rest of the concept will be the same.