Yet another injector question

vw1970 · Post by **vw1970** » Sat Mar 16, 2013 11:44 am

i'm finally ready to buy injectors and have been eyeing these for some time; http://www.siemensdeka.com/index.php?ma ... ucts_id=12

it's looks to me that they'll fit, they will be used in cb performance efi end castings and rails. seems that a 14mm o ring is the proper size for both. but will the length be an issue?

Also, the engine is a mild 1776cc with turbo in the very near future. Will 60lb be to big?

vw1970 · Post by **vw1970** » Mon Apr 15, 2013 5:33 pm

I see how it is, sometimes you have to go on your gut feeling.

So the injectors fit flawlessly and got the intake sorted. The throttle bodie is off of a 90'2 ford escort 1.9 and measures 50mm. the next thing is plumbing in the FPR, anyone have suggestion or preferences on hard or soft fuel line?

Clonebug · Post by **Clonebug** » Mon Apr 15, 2013 6:21 pm

I put hard line in my build and only used EFI hose where I had to.

There is a short piece between the hard line in the tunnel to the hard line going to the fuel rails. I also used hard line to go between the two rails.

A lot less chance of a leak from rubbing or pinching.

Volky · Post by **Volky** » Mon Apr 15, 2013 6:28 pm

Hi,

I'm new to all this but I believe 60lb. Injectors are way to big for a n/a 1776cc engine even thou you haven't provided much info about your engine.

I'm in the process of converting my 1776cc 1970 bug to EFI. I turned it on a few times with injectors then I decided to go all the way. Spent money on one type of VR setup then sent my pulley to thedubshop for the hidden wheel and sensor setup.

My injectors are from a chevy lumina which were given to me for testing but I do not have the specs for them. For now they will to do.

I would go 24lbs. tops on my setup.

This is my build:
viewtopic.php?f=23&t=140348

vw1970 · Post by **vw1970** » Mon Apr 15, 2013 7:03 pm

your build looks to be going swimingly! well it's to late to turn back on the injectors now, i can always swap at a later time..

Clonebug · Post by **Clonebug** » Mon Apr 15, 2013 9:04 pm

I'm running 32 lb. injectors on my 1679 cc engine with 11 lbs. boost now and hoping to go to 15+ lbs.

If you have them try em. The REQ_Fuel settings should compensate for them but you might have trouble at idle if your open time is really low.

supaninja · Post by **supaninja** » Mon Apr 15, 2013 9:49 pm

I have been eyeballing those same injectors for my gsxr ITB's. 60# isn't too big for a small NA motor, with these modern injectors you will have no problem with small pulse width at idle. Case in point, I ran ID1000's at 70psi base pressure and it idled smoother then the stock 310cc injectors. Yes, I needed that much fuel: e85 and a couple of bar's of boost plus a 8600 redline...my fuel setup was maxed out.

Old crappy RC injectors is another story, they idle like poop if you go too big but the new stuff is amazing.

Chip Birks · Post by **Chip Birks** » Mon Apr 15, 2013 10:47 pm

give them a try, you'll probably be just fine. Its just motivation to get the turbo on there sooner.

vw1970 · Post by **vw1970** » Tue Apr 16, 2013 5:04 pm

what you all are saying is exactly my reasoning for going big! I hear these injectors are particularly good at low pulse widths with high pressure. the turbo will be going on about a soon as the weather pemits me to work outside.. but still need to build the W/A intercooler, looking forward to that

Steve Arndt · Post by **Steve Arndt** » Tue Apr 16, 2013 5:23 pm

I installed my regulator under the package tray. It makes pulling the line for engine r&r easy to get to, it is easy to adjust the pressure on in that spot, and it is stealth.

Chip Birks · Post by **Chip Birks** » Tue Apr 16, 2013 9:49 pm

Steve Arndt wrote:I installed my regulator under the package tray. It makes pulling the line for engine r&r easy to get to, it is easy to adjust the pressure on in that spot, and it is stealth.

Me too, mine is a pain to adjust the pressure on though, nature of the beast. All steel full bodied car. Sure would be nice to cut the back like a baja sometimes.

MarioVelotta · Post by **MarioVelotta** » Wed Apr 17, 2013 9:03 pm

Chip Birks wrote:
Steve Arndt wrote:I installed my regulator under the package tray. It makes pulling the line for engine r&r easy to get to, it is easy to adjust the pressure on in that spot, and it is stealth.
Me too, mine is a pain to adjust the pressure on though, nature of the beast. All steel full bodied car. Sure would be nice to cut the back like a baja sometimes.

Or Eric's.

vw1970 · Post by **vw1970** » Wed Apr 17, 2013 10:27 pm

That makes sense installing under the tray, but the aeromotive compact efi reg. is such an attractive piece!! i think i've always been a "Fuction over Form" type anywho..
For now I cant do anything as the classic colorado weather decides to dump 18" of snow in two days in the spring..

andy198712 · Post by **andy198712** » Thu Apr 18, 2013 4:09 am

do you really need an intercooler???

vw1970 · Post by **vw1970** » Thu Apr 18, 2013 5:32 am

probably not, but i have the means available to me to fab a custom one. And a bare core is about a quarter the cost of a coplete intercooler

In the end, I'll feel better about detonation if I have one than not

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