Russ Collins Injectors

[phoenixtexoma]

The Russ Collins 370 injectors arrived today, am posting a pic for those who said they were interested in seeing them. Machined aluminum, very high quality appearance, and individually stamped with ID numbers. A perfect fit. The injectors came with a computer print-out certifiying the numbered injectors to be pre-tested and perfectly matched, as well as other detailed info. The injectors are set to operate at stock R1100S fuel pressure.

Will get them installed and run a few hundred miles to see what happens, and relay some impressions over the weekend on this thread.

[shreddr]

what benefit are you expecting them to deliver?

[phoenixtexoma]

A little extra fuel primarily. My Techlusion is maxed on the red pot, but the bike is still running very lean on top end with the mods I have. Other alternatives included a higher fuel pressure delivery with the stock injectors. The Collins injectors have a radically different nozzle system vs. the stock 4-hole disc type, and these are specifically designed for the Boxer engine. No change in idle or low-to-mid-range engine operation is promised.

We'll see this weekend. I've told several forum members I'll give as honest an evaluation as I can, even if it puts egg on my face at the end of the day. At the worst, I've wasted a few bucks. Next, I may even try the new gas additive Wundermittel sold by a German company called Schlange Ol.

[JonyRR]

Hey PT;
Howya doin.
I lost your civvie email address..shoot it to me, wouldja?
I seem to recall that the RC injectors were a money-back guarantee.
Russ Collins is a class act.
And no one on this board ever built a 3 engine or homebuilt V8 drag bike, much less set any world records, as Russ has.

Long live the Sorcerer and the Atchison, Topeka & Santa Fe.
http://www.motorcyclemuseum.org/halloffame/hofbiopage.asp?id=147

[throttlemeister]

Let us know PT

[phoenixtexoma]

Jony: My regular email is: phoenixtexoma@toast.net

Will keep you guys posted. Want to do some riding and plug readings under various conditions, starting with the Techlusion turned off, and then do a top-end GPS measurement. Mis-spoke earlier, the injector bodies aren't aluminum, they're stainless steel. The workmanship on these things is superlative. That in itself isn't a guarantee of anything, but it tells you something. Plus, the individual flow testing and spec sheet they send with the injectors.

The end result is performance, and we'll see how they do. I went the RC injector route because of the inconclusive results noted by Motor One on K-bike fuel pressure regulators for extra flow. As I said earlier, if this experiment is a bust, I'll be the first to mea culpa.

P.S. The Wundermittel from Schlange Ol is a joke. It's German for "snake oil miracle cure."

[feds27]

phoenixtexoma,

So you're running:
-Techlusion
-Brisk plugs
-Nology Coils and wires
-Lennies Induct with SJ Air Filter

I searched the web after I read your post because it sounds like you have a good idea. From the FAQ on the RC site and info from a few other sites, it looks like one would probably have to mod the following to get a benefit. Just curious if you've done some of the mods or plan on doing them.

-open up the exhaust, I assume you have a laser, staintune, or the like on your bike.
-remap ECU
-throttlebody and grind engine intake mods like mr. pcm did his?
-upgrade the fuel pump
-change fuel pressure regulator
-possibly change valves

I was also reading up on desmodromic, vtec, pneumatic valving, etc and I recall one of the versions of vtec did something to promote more atomization of fuel in the cylinder. It seems fuel/air delivery is pretty complicated ;-) I'm just a casual rider and not looking to do any of these mods, but I enjoy reading threads like these.

[phoenixtexoma]

Feds: No fuel pump or fuel pressure regulator upgrades or ECU remap needed for their 370 injectors, according to the RC engineer I've been talking to. The SL-2 370 is considered a high-performance unit, recommended for basically stock R1100S engines with significantly increased air intake and exhaust capacity.

That's what the RC people are telling me. I should be able to relay some details soon.

[feds27]

Are you racing/track your bike? I hope the mod works out. Those RC injectors sure do look purdy.

[Peter Parts]

I'm joining the crowd waiting to hear your verdict with interest.

For your initial re-tune up, you might consider riding around with your TwinMax (or better, dual vacuum gauges) so as to ensure parallel operation all through the whole rev band (makes little sense to tune in the driveway under no load). The BBS and Bowden adjusters interact in a wicked way that can't be sorted-out at the usual minuscule throttle openings (like an equation with a bunch of unknowns). This is especially important if the matched-pair balance is appreciably better than the old injector balance (Bosch supplies BMW just to 10%, Adam Wade says).

In addition to feel-good balance (valuable in a Boxer, of course), there are two aspects to your change: there's possibly increased volume and better spray pattern. The RC injectors may or may not improve the top end based solely on fuel volume and all bets are off (till you report back) about benefits across the rev compass.

But as with going to more precision carbs (that is, anything but Bing), low rev (and idle) atomization/flow may get a big performance boost with your better spray pattern. It may not be your primary interest, but enhancement down at that range may be the most obvious change.

The large size bores on the TBs may be a reason the R1100S idles so poorly and high. If you can bring your idle down and make it smoother, that will indicate your new injectors were a wise mod. In any case, another criterion of performance you might consider.

[boxercup]

Originally Posted by phoenixtexoma

even if it puts egg on my face at the end of the day

Greetings PT,

Don't worry about egg on your face....

There are many with none=that means they are perfect (Yeah Sure!) or did not try. You tried!

Nice work!

[phoenixtexoma]

Just a quick question. What's a good top speed estimate for a typical R1100S? About 135? Need a benchmark for a top end run with GPS. Feds: am also running a Vanderlinde exhaust with SJBMW exhaust accelerators and cross-over plug fully removed. Plus, Lennie's cam sprockets, SJBMW snorkel attached to the end of the Induct tube. Peter Parts: good suggestions, will see if I can figure out how to strap my Twin Max on in a readable spot.

Hope to spin the wheels after work today, but looks like rain is moving in here in north Texas.

[Bob Hancock]

[QUOTE=phoenixtexoma;3889808]will see if I can figure out how to strap my Twin Max on in a readable spot.
QUOTE]I've done it with using velcro on the back of the Twin Max and sticking it to the top of my tank bag where I normally mount the map cover.

[Peter Parts]

Temp. mounting for dual vacuum gauges. Fuel line clamps make good snubbers.



Some people think very cheap, 35 yr old vacuum gauges that have been thrown around a tool box for a long time are not accurate. The picture below shows the results when two are connected to one Mityvac.



On my new-model 9v TwinMax, the meter marks at the highest sensitivity are about the same as these 2-inch Hg marks. Reasonable to aim for not much more than one mark deviation across the band... OK, maybe two sometimes.

[phoenixtexoma]

First report -- rain held off and I was able to put about 25 miles on the bike with the Techlusion turned off. Based on the way it ran, I may disconnect the Techlusion. Hopefully this weekend I can maybe adapt Bob's method for the Twin Max. Early notes:

1. The idle DROPPED by about 150 rpm, a quarter turn in on the brass screws got it to a perfectly smooth 1,000 rpm.
2. No low or mid-range lumpiness at all. Haven't done a plug check yet, but the exhaust is still as clean as it was when I left. Much less farting on deceleration.
3. The bike definitely has a much more robust, torquey feel all through the gears and no more top end leaning out. The tach needle flies.
4. Almost zero vibration up to 5k rpm.

Once I'm done with the twiddling, forum member Jarhead has a GPS and said he would go out with me to record a top end run. That's why I asked about an average top speed for reference. A pic of one of the installed injectors is shown.

P.S. Anyone need a set of stock injectors?

[feds27]

Originally Posted by Peter Parts

Temp. mounting for dual vacuum gauges. Fuel line clamps make good snubbers.

That's friggin' great and no battery.

[feds27]

phoenixtexoma:

So from your limited test ride it seems they provide a smoother ride. Do you remember how the old injectors performed when they were new? Do you think the improvement may have been due to the new set of injectors or do you think it was due to the perfectly matched pair and messing with the pressure? I'm glad it worked out. By the way, did you ever look up the post by pcm847? He did some work on his throttle bodies to help with airflow.

Winter tuneup

[phoenixtexoma]

No question about it, a smoother, more robust feel, apart from all-out performance considerations. I've had my bike since mile 3,800 (now at 14,000), and it never ran like this before. But that's just an initial impression. 200-300 miles this weekend and lots of checking will tell the tale. To answer your question, I think the end result isn't just the injectors, but all the mods as a whole. Also, wouldn't perfectly matched injectors of any kind, stock or otherwise, make sense for a Boxer-type engine? One impression I got today had nothing to do with performance, but how the engine felt. More like an inline than an opposed twin. Will check out pcm847's post.

As I mentioned, the top-end run by GPS will tell the tale. Until then, miles and miles of checking every aspect. Maybe Jarhead can spin the wheels and pitch in to keep me honest.

[pmc847]

When you dyno don't forget to get A/F readings. Did you set up a time with Tony at EuroSport? Say hi to Tony for me.

RC bored my T595 TBs back in '97. Check with them about boring your S TBs. The guy that did my BCR TBs did a great job on the boring but I didn't like the fact that he did not bevel/angle cut the butterflies, made it almost impossible to set idle properly. My TBs are at Kinsler's to have new butterflies installed with the proper angle cut.

Philip

[phoenixtexoma]

pmc: reply with your name, so when I talk to Tony at EuroSport I can tell him you said howdy. It will be a little later this spring before I can get down there, it's about 150 miles from me. I initially called last week (Tony was at lunch or somewhere), the guy said they were pretty busy this time of year and appointments had to be scheduled well in advance.