Fuel Injectors

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Fuel Injectors

Postby h-bot » Wed Dec 29, 1999 10:52 am

From: cosworth_twincams_REMOVE_332497_THIS_@yahoo.com


I need some help with specifications on the
following Bosch Fuel Injectors; 0-280-150-036,
0-280-150-151 and 0-280-150-007. These injectors look like they
will work on the Cosworth but require substantial
modification to work. Any information will be greatly
appreciated.

Thanks

Tim


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Fuel Injectors

Postby h-bot » Thu Dec 30, 1999 1:48 am

From: doctorduke_REMOVE_262609_THIS_@yahoo.com


According to my 1994 Bosch catalog buyer's guide,
the 036 injector was used on 72-75 Mercedes six and
eight-cylinder engines from 2.8 to 4.5 liters. The 151 is used
on 75 to 78 BMW 3.0 liter sixes and the 79-87 Jag
XJ6. The 007 is used on the 68 to 72 VW Type 3 and
70-73 Type 4, but only if you have a license to
kill

doctorduke


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Fuel Injectors

Postby h-bot » Thu Dec 30, 1999 10:15 am

From: cosworth_twincams_REMOVE_216687_THIS_@yahoo.com


Thanks Duke.


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Fuel injectors

Postby h-bot » Mon Feb 07, 2000 3:28 am

From: rondeau3_REMOVE_570304_THIS_@yahoo.com


Hey, I was wondering; are the injectors on the CV
made by Rochester?
I had Rochester on my ZR1, and
they tend to rust when the car is not used on a
regular basis.
I don't have any injector problems, but
I wanted to share what I know with you
guys.
(You might already know this.)

RC Engineering,
(www.rceng.com), are injectors specialist, they carry "Lucas"
injectors, and are made of stainless steel, they also are of
a disc type instead of pintle, the deal is you can
send your injectors, they will clean them, and flow
test them, and send you the chart from the flow bench,
it cost about $24 ea. and if you don't like the
result, or if one of them is toasted, you buy new ones
and they credit the $24.
I don't know if the CV
have injectors problems, but I dealt with them for my
ZR1, I replaced all 16 injectors, they flow test the
new ones also and give you a set that are as close as
possible, I think less than 2% variance, I would have to
look at my chart, but you get the idea, if they are to
far appart, they don't send them, they match a nice
set, and man does it work good.
On the ZR1 between
90-92 the primaries injectors are different than the
secondairies, there is a flange at the bottom of the sec. that
needs to be grounded off on the primaries, they do it
at no extra charges.
So if your injectors needs
work, I recommend these guys, they will answer all your
questions, I even know a guy that went there and saw how
they tested his injectors, and he convinced me that it
was a very good outfit to deal with, they will
customize to your specs.

Maybe you knew, maybe you
didn't, if you didn't, check their web site, or call
them.

Al


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Fuel injectors

Postby h-bot » Mon Feb 07, 2000 3:47 am

From: doctorduke_REMOVE_941559_THIS_@yahoo.com


The CV injectors are made by Bosch, but are no
longer available. They have proved to be much more
durable than the later GM injectors which are of similar
design. Recently, we have identified a company in
Southern California that can rebuild then. There is also a
company listed in CV Magazine that and can clean and flow
test them, though this service is widely available.
They also supply the Club's injector O-ring, Seal, and
Grommet kits (which I'm sure you should change on your
car.) Chevrolet's maintenance schedule recommends
changing them every three years or 22,500 miles (whichever
comes first) doctorduke's maintenance program for
occasionally driven cars stored inside recommends changing
these parts every 12 years or 30,000 miles (whichever
comes first, of course)

doctorduke


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Fuel injectors

Postby h-bot » Mon Feb 07, 2000 9:45 pm

From: markarock_REMOVE_406588_THIS_@yahoo.com


Some engineers are conservative. Some are
paranoid. Some are clueless. I put 153,000 miles on #0971,
of which the last 2000 came over three years, while
the rest came at a 20,000 mile per year rate. The
injectors were never removed, and the o-rings and seals
etc. were never touched over those ten years. Perhaps
I was lucky, but I don't think so. I've since seen
other high mileage Cosworths that have never had these
items replaced in fifteen and twenty years, and there
was nary a sign of a problem. Sometimes the best
advice is: "If it ain't broke, don't fix it." On the
other hand, I can personally attest to the
destructiveness of an engine compartment fire in the Crispy
Critter (shorted battery cable, it appeared). Maybe the
decision is a function of one's spare time, perception of
risk, and tolerance of risk. The risk reasonably
perceived identifies the maintenance to be performed.


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Fuel injectors

Postby h-bot » Tue Feb 08, 2000 12:26 am

From: doctorduke_REMOVE_959108_THIS_@yahoo.com


Engineers, Physicians, Plumbers, and Lawyers all
probably form a similar competence sprectrum within their
professions. Some of the worst amateur mechanics I've ever
seen were double Es. Since the EFI system and its
associated hardware were new to GM I think they were very
conservative on the maintenance requirements, but the fact
remains that organic materials degrade with elevated
temperatures, and the consequences of an O-ring or fuel line
failure can be catastrophic to the car. Given the effort
to change the O-rings and cost of the parts, it is
very cheap insurance. I won't admonish you for lack of
maintenance as you learned the result the hard way, but I
will ask you if you'd fly on an airplane who's owner
ignored the manufacturer's recommended maintence
schedule.

doctorduke


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Fuel injectors

Postby h-bot » Tue Feb 08, 2000 8:34 am

From: markarock_REMOVE_691193_THIS_@yahoo.com


My e-bay fire wasn't the result of poor
maintenance. Nothing that the manufacturer recommended be
changed caused it. As for flying in an airplane that had
exceeded the maintenance schedule, that would depend. If
it was beyond the point for changing the oil, then
certainly. It it was beyond the point for changing the cam
belt. Sure. But isn't the question how far beyond, and
how much of a safety factor was built in by the
engineers, and how much on top of that was mandated by the
insurors. My guess is that double the recommended would
still be wildly conservative, and double that might be
approaching the point of being meaningful. I've never had a
Cosworth injector 0-ring fail, I've never seen a Cosworth
injector o-ring fail, and I've never heard of anybody
having one fail in a Cosworth. I'd be interested to hear
if anybody has had that unfortunate experience, and
if so the circumstances. If so, I might reconsider
my estimate (extremely low) of the level of risk
inherent in leaving well enough alone.


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Fuel injectors

Postby h-bot » Tue Feb 08, 2000 3:29 pm

From: cozwurth_REMOVE_216091_THIS_@yahoo.com


Mark,
I have had an injector O-ring fail on
#1009. It started leaking when I reinstalled the intake
manifold after replacing the starter. A couple of twists
of the injector made it stop, but I still replaced
ALL of the O-rings, just to be safe. All of the
O-rings that I removed were hard and very brittle. Some
of them broke while I was removing them. I hate to
think what could have happened if I had been driving
the car when that O-ring failed.

Just my
$.02

Dave


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Fuel injectors

Postby h-bot » Tue Feb 08, 2000 8:15 pm

From: wheatchex1_REMOVE_729185_THIS_@yahoo.com


I too have a leak comming from the rail to
injector interface on #3 cyl. Even though there aren't
that many miles on #1620, I would assume that over
time the rubber would have to harden and crack. I plan
on replacing all the o-rings just to be safe. I sure
don't want a melt down and $8 seems like cheap
insurance.


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Fuel injectors

Postby h-bot » Tue Feb 08, 2000 8:38 pm

From: concosworth_REMOVE_956683_THIS_@yahoo.com


Sorry Mark.
Don't mean to gang up on you. But
I also had a injector oring fail after I did a
timing belt and water pump job? Guess I disturbed it
enough huh?
Only seaped but enough to smell the odor
in the drivers seat. As cheap insurance I changed
the eighteen year old orings.
Talk at
ya.
Craig.


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Fuel Injectors

Postby h-bot » Tue Oct 23, 2001 3:27 pm

From: CSWRTH1_REMOVE_731555_THIS_@yahoo.com


After calling several people, Britt referred me
to a place called RC Engineering in Torrance, Ca. I
got a quote from them of $24 per injector to clean
and flow test. I wanted to do about 30 injectors and
when GB Remanufacturing doubled thier price to $30
each, I was looking at $900. I then started looking
into buying an injector cleaning and testing machine.
GB remanufaturing sells these machines but they
start a $4200 from them for a unit that does 4 at a
time. Brett Instrument will rebuild the injectors for
$28 but thier lead time is about 2 weeks. I am
sending one set to RC Eng. to get cleaned because I need
one set right now. I will let you know how that goes.
I also asked them about replacement injectors. They
said that the Cosworth injector flows about 335
cc/min. The closest they have is one that flows 370
cc/min. The price on that one is $84.50 ea. I am sure
that we can find a stock replacement out there
somewhere but for high performance engines, this may work.
The Cadillac injectors they said put out 420 cc/min
which I know is too much. I may use an adjustable fuel
pressure regulator in combination with a higher flow
injector.
In regards to rebuilding the injector, Neal
Williams and I were talking about it and decided that the
injectors may be reaching the end of thier life span.
Simply cleaning them may not be enough any more. I am
sending 6 sets in to Brett Instrument to be rebuilt. He
says he dis-assembles them, changes the internal
spring, filter screen, and O-ring, cleans them up,then
puts them back together and flow tests them. I have
been seeing more and more injector failures lately and
this may be the best bet. If anyone else has any
thoughts or info, let me know. I will keep you posted with
what I find out. Chris


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Fuel Injectors

Postby h-bot » Tue Oct 23, 2001 3:40 pm

From: CSWRTH1_REMOVE_603216_THIS_@yahoo.com


First of all, I am not sure why my brain made me
keep typing thier instead of their. It didn't look
right either way for some reason. Anyway, if you want
to check out RC Engineering, they have an
interesting web page at www.rceng.com. Chris.


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Fuel Injectors

Postby h-bot » Tue Oct 23, 2001 5:06 pm

From: longg01_REMOVE_138428_THIS_@yahoo.com


RC Engineering did my brother's injectors for his
race car. They give you a cool print out sheet of
before and after their magic. I'm not a knowledgable
person on injectors to say if they did a good or bad
job, but I just wanted to let you know that they do
many raceing fuel injectors.
~CHRIS
#0754


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Fuel Injectors

Postby h-bot » Tue Oct 23, 2001 5:24 pm

From: rondeau3_REMOVE_868479_THIS_@yahoo.com


It's about time, I've been posting RC's web site
for almost 2 years now.

The replacement is a
better injector, too bad they don't have one with the
same flow.

They use Lucas and are made of
stainless steel components, it's a plus for cars that see
long period of storage, plus the are of a disc type
not pintle and when you see the spray pattern on
those you'll never want the pintle type
again.

Another advantage with RC, is if you find a replacement,
you have the option of sending yours out to get
cleaned and if they are not good anymore and decide to
buy a new set, the cleaning on the old ones is free
of charge, so you don't have to pay twice.

I
can go on and on, and describe in detail their
cleaning procedure, but I'll save you all the details, all
I can say is I know a lot of people that dealt with
them and they are very impressed, I know I am, try to
imagine, we have cars with 16 injectors and are all happy
after dealing with these guys.

My set of 16 was
flow tested even if new and they kept them within 1%
of flow and spray pattern, if one was too far off,
they try a different one.

They will send you a
set that will be as close as possible from each other
and you'll get the flow spec sheet with
it.

Can't they rebuild the CV injectors too?

Al


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