What about the through hole size for the boss on the intake manifold side? 10mm also?eric at wryday.com wrote:
I drill a 10 mm through hole, ream it to appropriate depth with a 13.5 mm
reamer, chamfer it about 1.5 mm with a 40-45 degree countersink, then
give it a little more bellmouth with a 15 degree countersink.
mounting injectors to a fuel rail
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Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
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panel
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mounting injectors to a fuel rail
Last edited by panel on Wed Oct 06, 2004 7:52 pm, edited 1 time in total.
mounting injectors to a fuel rail
for my fuel rail i took a stock volvo fuel rail. ( my car is an older volvo with different port locations) i wanted to use the same fpr and injectors.
witha torch i heated the bungs until the silver solder melted out. plugged the holes with 1/4" rod and silver soldered those in, then drilled holes in the appropriate spot and silver soldered the bungs where i needed them.
to be honest i didn't silver solder them myself. i hear its kinda tricky. this was on a round rail too which made it trickier but all worked out well.
james
witha torch i heated the bungs until the silver solder melted out. plugged the holes with 1/4" rod and silver soldered those in, then drilled holes in the appropriate spot and silver soldered the bungs where i needed them.
to be honest i didn't silver solder them myself. i hear its kinda tricky. this was on a round rail too which made it trickier but all worked out well.
james
i know nothing about electronics...NOTHING!!! my questions may be silly but my intent is noble.
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panel
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mounting injectors to a fuel rail
Whats the thickness of this material so as not to drill the through hole into the injector pocket? What size is the through hole and also what is the size of NPT on the end? 1/4"? Which hole is 10mm? The inj through hole or the hole through the whole thing?eric at wryday.com wrote:
I drill a 10 mm through hole, ream it to appropriate depth with a 13.5 mm
reamer, chamfer it about 1.5 mm with a 40-45 degree countersink, then
give it a little more bellmouth with a 15 degree countersink.
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efahl
- Site Admin
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mounting injectors to a fuel rail
On Wed, October 13, 2004 12:26 am, panel said:
> I drill a 10 mm through hole, ream it to appropriate depth with a 13.5 mm
> reamer, chamfer it about 1.5 mm with a 40-45 degree countersink, then
> give it a little more bellmouth with a 15 degree countersink.
>
> [/quote:2b42cb0473]
>
> Whats the thickness of this material so as not to drill the through hole
> into the injector pocket?
I'm not quite following you. The through-hole is the first thing
that I drilled to define the injector pocket, the reamer and c-sinks
just make it fit. Tom has dimensions of the extrusion on his website,
does this help?
<http://www.rossmachineracing.com/extrusion.html>
> What size is the through hole and also what is
> the size of NPT on the end? 1/4"?
3/8" but you shouldn't use NPT, use straight AN with o-ring seals.
I think the hole is the right size for 5/8"-18 fittings already.
Eric
--
Eric Fahlgren http://www.not2fast.com/
> I drill a 10 mm through hole, ream it to appropriate depth with a 13.5 mm
> reamer, chamfer it about 1.5 mm with a 40-45 degree countersink, then
> give it a little more bellmouth with a 15 degree countersink.
>
> [/quote:2b42cb0473]
>
> Whats the thickness of this material so as not to drill the through hole
> into the injector pocket?
I'm not quite following you. The through-hole is the first thing
that I drilled to define the injector pocket, the reamer and c-sinks
just make it fit. Tom has dimensions of the extrusion on his website,
does this help?
<http://www.rossmachineracing.com/extrusion.html>
> What size is the through hole and also what is
> the size of NPT on the end? 1/4"?
3/8" but you shouldn't use NPT, use straight AN with o-ring seals.
I think the hole is the right size for 5/8"-18 fittings already.
Eric
--
Eric Fahlgren http://www.not2fast.com/
mounting injectors to a fuel rail
[quote]
I drill a 10 mm through hole, ream it to appropriate depth with a 13.5 mm
reamer, chamfer it about 1.5 mm with a 40-45 degree countersink, then
give it a little more bellmouth with a 15 degree countersink.
Eric, you said the above in an earlier post. Does this mean I don't have to mount and weld a boss into the rail? I can just drill to these dimensions and the injector will just push in to the rail?
Will the inject stay in the rail ok? Will I not need any clips to hold it in place?
I've just bought some 37lb high impedance lucas/delphi injectors from Racetronix (great price
), will these dimensions be good for these?
Hi I'm new to these boards, sorry for all the question but your help would be much appreciated.
Regards
Dave
I drill a 10 mm through hole, ream it to appropriate depth with a 13.5 mm
reamer, chamfer it about 1.5 mm with a 40-45 degree countersink, then
give it a little more bellmouth with a 15 degree countersink.
Eric, you said the above in an earlier post. Does this mean I don't have to mount and weld a boss into the rail? I can just drill to these dimensions and the injector will just push in to the rail?
Will the inject stay in the rail ok? Will I not need any clips to hold it in place?
I've just bought some 37lb high impedance lucas/delphi injectors from Racetronix (great price
), will these dimensions be good for these?Hi I'm new to these boards, sorry for all the question but your help would be much appreciated.
Regards
Dave
-
efahl
- Site Admin
- Posts: 232
- Joined: Mon Feb 16, 2004 3:15 pm
- Location: San Clemente, California, USA
- Contact:
Re: mounting injectors to a fuel rail
DHBrum wrote:
> Eric, you said the above in an earlier post. Does this mean I don't have to mount and weld a boss into the rail? I can just drill to these dimensions and the injector will just push in to the rail?
Dave,
That's correct, no welding because the rail is extruded to have enough
meat to allow just this. Here is Keith's page with the pix I took of the
stock and a brand new one with the tools that I used, click the thumbnails
for the big version:
http://not2fast.com/audi/5ktqa/ms-2004/ericPics/
http://not2fast.com/audi/5ktqa/ms-2004/ ... uction.jpg
> Will the inject stay in the rail ok? Will I not need any clips to hold it in place?
On my car I have clips, plus the rail is bolted to the head. On Keith's
we just bolted the rail to the head with some 1/8" stainless brackets I
fabbed up:
http://not2fast.com/audi/5ktqa/ms-2004/ ... racket.jpg
> I've just bought some 37lb high impedance lucas/delphi injectors from Racetronix (great price ), will these dimensions be good for these?
Most likely, but you'll need to do some cursory measurements to make sure.
Just make sure the end of the injector is about 14 mm diameter at the o-ring
and that the end containing the o-ring is about 10 mm long. This makes
it a "Bosch form-factor injector", which should work just fine.
Eric
--
Eric Fahlgren http://www.not2fast.com/
> Eric, you said the above in an earlier post. Does this mean I don't have to mount and weld a boss into the rail? I can just drill to these dimensions and the injector will just push in to the rail?
Dave,
That's correct, no welding because the rail is extruded to have enough
meat to allow just this. Here is Keith's page with the pix I took of the
stock and a brand new one with the tools that I used, click the thumbnails
for the big version:
http://not2fast.com/audi/5ktqa/ms-2004/ericPics/
http://not2fast.com/audi/5ktqa/ms-2004/ ... uction.jpg
> Will the inject stay in the rail ok? Will I not need any clips to hold it in place?
On my car I have clips, plus the rail is bolted to the head. On Keith's
we just bolted the rail to the head with some 1/8" stainless brackets I
fabbed up:
http://not2fast.com/audi/5ktqa/ms-2004/ ... racket.jpg
> I've just bought some 37lb high impedance lucas/delphi injectors from Racetronix (great price
), will these dimensions be good for these?Most likely, but you'll need to do some cursory measurements to make sure.
Just make sure the end of the injector is about 14 mm diameter at the o-ring
and that the end containing the o-ring is about 10 mm long. This makes
it a "Bosch form-factor injector", which should work just fine.
Eric
--
Eric Fahlgren http://www.not2fast.com/
Last edited by efahl on Sun Dec 19, 2004 8:38 am, edited 1 time in total.
mounting injectors to a fuel rail
Thanks for that Eric, it's very much appreciated.
I realize I'm coming into this discussion a bit late, but I'm wondering why the recommendation to not use NPT fittings in the fuel rail? I just did a test drill of a couple fittings in my piece of scrap fuel rail material from RMR and the NPT fittings worked out as well as the O-ring fittings. The stock Ford schraeder valve fitting is a 1/16th NPT fitting and as far as I know, not available in O-ring fitting. I haven't actually pressure tested the setup yet, but will very shortly before I install the system on the truck.
Dennis
Dennis
Very helpful information... Thank you!
Where can you get a 13.5mm reamer? I looked at grizzley tools and they don't carry a 13.5mm reamer.
Pardon my ignorance but I assume I can just chuck a reamer up in my drill press or in a chuck in my lathe to ream a fuel injector pocket? Will a reamer handle reaming mild steel? I saw grizzley tools carries a couple sets of adjustable reamers. Not having used a reamer before I assume I could purchase an adjustable reamer set and adjust one to exactly 13.5mm or .540" is this correct?
Thank you for the help!
Where can you get a 13.5mm reamer? I looked at grizzley tools and they don't carry a 13.5mm reamer.
Pardon my ignorance but I assume I can just chuck a reamer up in my drill press or in a chuck in my lathe to ream a fuel injector pocket? Will a reamer handle reaming mild steel? I saw grizzley tools carries a couple sets of adjustable reamers. Not having used a reamer before I assume I could purchase an adjustable reamer set and adjust one to exactly 13.5mm or .540" is this correct?
Thank you for the help!