2bbl 2300 series sniper efi

For everything related to using Fuel Injection in an FSJ.
Post Reply

Topic author
Srdayflyer
Posts: 43
Joined: Mon Mar 18, 2019 2:08 pm

2bbl 2300 series sniper efi

Post by Srdayflyer » Tue Sep 21, 2021 11:49 pm

Just bit the bullet on a holly system now just waiting for it to be deluvered
here are the parts needed for a stock 360 with a mild rv cam installed , these were the parts recommended by holley technician tecnical support
they recommend that -6 or 3/8 fuel supply and return lines be used as numerous drivability issues arise especially if a 3/8 return line is not used.

1. sniper kit p/n 550-849K
2. hyper spark distributor p/n 565-308
3. hyper spark coil p/n 556-153
4. hyper spark coil driver p/n 556-150

I modified the fuel sender fuel pickup and return fuel lines
i will post a complete set of pictures when i begin the installation so others will have a better idea of what is involved :👀:


Topic author
Srdayflyer
Posts: 43
Joined: Mon Mar 18, 2019 2:08 pm

Re: 2bbl 2300 series sniper efi

Post by Srdayflyer » Wed Oct 06, 2021 11:37 pm

Update, have been waiting for shipment from holley to arrive, parts are dribbling in due to back orders ,waiting on sniper coil driver and sniper distributor.
Received sniper kit and coil , and will show modified fuel sender in 2 different fuel tanks, I have 2 fuel tanks that were cracked and cut them open to better fit modified sender the best possible way.the tanks have different internal baffling, so the fit for fuel pic up is different. , stay tuned

User avatar

Renodemona
Posts: 904
Joined: Wed Jan 01, 2014 9:55 pm
Location: Sparks, NV

Re: 2bbl 2300 series sniper efi

Post by Renodemona » Fri Oct 08, 2021 4:18 pm

I didn't know they had come out with a 2 barrel system, cool!
"Wait, what's on fire!?" KJ7TCT
--------------------------------------------------------------
1976 Cherokee w/t 'Susan' 401/TH400/QT(PT)
FiTech Go EFI, Edelbrock Performer intake
3" Rough Country Springs, HEI Dizzy
-------------------------------------------------------------
2018 Cherokee Trailhawk V6 'Sedna'


Topic author
Srdayflyer
Posts: 43
Joined: Mon Mar 18, 2019 2:08 pm

Re: 2bbl 2300 series sniper efi

Post by Srdayflyer » Sun Oct 10, 2021 8:35 pm

started the installation this weekend, started with modification of the fuel sending unit. having spoken to holly tech, and the issues that some have encountered by not having the sniper fuel control returning fuel thru 3/8 id line to the tank.see attached pictures of the modified sender, and what it looks like in the fuel tank, one item of note, there are 2 styles of fuel tanks both look the same on the outside but internally are different in regards to the fuel sump pickup wells. my modified my pickup to be 3/8ths of and inch above the bottom of the tank


Topic author
Srdayflyer
Posts: 43
Joined: Mon Mar 18, 2019 2:08 pm

Re: 2bbl 2300 series sniper efi

Post by Srdayflyer » Mon Oct 11, 2021 8:39 pm

20211009_123416 (1).jpg
there are 2 styles of fuel tank sumps this shows the improper fuel sender
You do not have the required permissions to view the files attached to this post.


Topic author
Srdayflyer
Posts: 43
Joined: Mon Mar 18, 2019 2:08 pm

Re: 2bbl 2300 series sniper efi

Post by Srdayflyer » Mon Oct 11, 2021 8:48 pm

20211009_123400.jpg
20211009_142028.jpg
this is the other style fuel sump
You do not have the required permissions to view the files attached to this post.


Topic author
Srdayflyer
Posts: 43
Joined: Mon Mar 18, 2019 2:08 pm

Re: 2bbl 2300 series sniper efi

Post by Srdayflyer » Mon Oct 11, 2021 9:04 pm

20211009_123533.jpg
20211009_131521.jpg
You do not have the required permissions to view the files attached to this post.

User avatar

Stuka
Site Admin
Posts: 10671
Joined: Thu May 12, 2011 5:53 pm
Location: CA
Contact:

Re: 2bbl 2300 series sniper efi

Post by Stuka » Tue Oct 12, 2021 6:20 am

I didn't know they added that baffle to later years. I ran out of fuel in my '75 multiple times by just driving downhill.
2017 JKU Rubicon Lifted and stuff
Pevious Jeeps: 1981 J10, 1975 Cherokee, 2008 JK, 2005 KJ, 1989 XJ


Topic author
Srdayflyer
Posts: 43
Joined: Mon Mar 18, 2019 2:08 pm

Re: 2bbl 2300 series sniper efi

Post by Srdayflyer » Thu Oct 14, 2021 5:30 am

there are 3 style fuel tanks used in fsj vehicles, the early style has no internal fuel baffle provision, if you are below 1/4 full you may incur fuel starvation when going down steep grades , to my findings these tanks were used up to 73-74,then as shown the high baffle from 74-79/80, then the low baffle from 80 till production stopped. the only sender available i have seen available as shown when installed in a high baffle tank may not show low qty levels as the probe float rides on the baffle, see picture, i want to thank Patrick Curtis FSJ Cherokee driver who supplied me the tank cut ups , to prototype the sender, no useable tanks were cut up support this project ,the attached pictures show the sender drilled to 3/8th"for the new lines and were soldered in place and the sender installed in the tank mockup showing it extended to 3/8th" from the bottom of the tank in the other picture shows how short the sender is without the internal fuel strainer. having removed the fuel tank to install a spring lift kit i replaced the fuel tank vent check valves and fuel strainer only to have to flush the tank to remove broken parts from the above mentioned parts the sniper kit comes with 2 fuel filters 1 10 micron and 1 100 micron external mounted. and that is the primary reason to extend the fuel pickup line to the bottom of the tank, i am now working on the fuel pump installation, if you have any questions send me and e-mail
You do not have the required permissions to view the files attached to this post.


Topic author
Srdayflyer
Posts: 43
Joined: Mon Mar 18, 2019 2:08 pm

Re: 2bbl 2300 series sniper efi

Post by Srdayflyer » Thu Oct 14, 2021 11:27 am

i am posting the fuel pump mount bracket that i made from 1/8 4x5 plate that i am going to rubber isolate from the spare tire cross member to minimize noise and vibration from the cab and the pump,the holley instructions recommend that the pump be mounted near the fuel tank along with the fuel filters the combined length of the pump assembly with the filters as shown in the instructions is 15" long and allows no logical place to put it i will keep thing moving https://www.fsjnetwork.com/forum/postin ... 51355ef5d1#
You do not have the required permissions to view the files attached to this post.

User avatar

Yeller
Posts: 129
Joined: Thu Apr 01, 2021 7:54 am
Location: Rogers County Oklahoma

Re: 2bbl 2300 series sniper efi

Post by Yeller » Thu Oct 14, 2021 11:50 am

I really like using these housing brackets from 86-90 f150’s if you can find them. Really makes the pump quiet. Unfortunately the only way to get a new one is attached to a new $500 pump :banghead: and the pump is only $50 if you buy it separately :roll:
You do not have the required permissions to view the files attached to this post.
The bus I ride is so short it is a yellow Smart Car full of squirrels, monkeys and clowns.


Topic author
Srdayflyer
Posts: 43
Joined: Mon Mar 18, 2019 2:08 pm

Re: 2bbl 2300 series sniper efi

Post by Srdayflyer » Thu Oct 14, 2021 1:25 pm

i have the isolators they just arent in the picture, stay tuned

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest