Gauging interest on Custom Large Hi. Imp. Injectors
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On The Tree
Joined: Dec 2001
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Gauging interest on Custom Large Hi. Imp. Injectors Hey all, I'm always trying to come up with helpful ideas and items of interest for us boosted LSx owners. I have sourcing through Siemen Deka to build very large High Impedance Injectors, as many of you know 50# injectors are the biggest the stock computer can handle in terms of what is available on the market right now for injectors sizing- nobody makes any bigger ones that are High Imp. Any bigger and you have to go to Low Imp. and run some sort of Imp. convertor or and aftermarket system, both are on the expensive and complicated side.
If we get a group of 10 or more people we can get injectors built to whatever size within reason we want - all 80 or more must be the same size, so let's figure out some sizing that you guys think would meet your high power setup's needs.
I'm thinking somewhere in the 72-83# range rated at 38psi so on an LS1 it would be even larger, or enough to support around 1,000 hp.
The turn around time is about 1 month and pricing should be around $500 or possibly less, let me know what you think!
If we get a group of 10 or more people we can get injectors built to whatever size within reason we want - all 80 or more must be the same size, so let's figure out some sizing that you guys think would meet your high power setup's needs.
I'm thinking somewhere in the 72-83# range rated at 38psi so on an LS1 it would be even larger, or enough to support around 1,000 hp.
The turn around time is about 1 month and pricing should be around $500 or possibly less, let me know what you think!
Re: Gauging interest on Custom Large Hi. Imp. Injectors is this posiable? i always assumed that the 50lb limit had something to do with larger injectors requiring more current, i really don't know much about it but it seems like if they could be made someone would have made them. what are the draw backs to a large high impedance injector vs a low impedance injector besides the required driver?
if they can be made i am sure they would sell.
if they can be made i am sure they would sell.
Moderator
Joined: Nov 2001
Posts: 3,048
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From: Raleigh, NC
Re: Gauging interest on Custom Large Hi. Imp. Injectors Do I have a choice? <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
I'd think 83#'ers would be the next size to make it worthwhile., though since I am at 42's, just about ANY odd size bigger than 50's is better than what I have.
Questions I'd have are:
Who would buld them?
Would they compare in quality and ease of tuning to, say, the SVO's?
Since they are custom, what happens if one quits? Would they have built a few spares to replace a defective injector found in the batch during some operation in the customer's vehicle? (The car has been parked enough, lately.)
I can tell you I could not contribute money to ANYTHING until after Christmas. My wife is upset with me now. (Where did all your money go?
I'd think 83#'ers would be the next size to make it worthwhile., though since I am at 42's, just about ANY odd size bigger than 50's is better than what I have.
Questions I'd have are:
Who would buld them?
Would they compare in quality and ease of tuning to, say, the SVO's?
Since they are custom, what happens if one quits? Would they have built a few spares to replace a defective injector found in the batch during some operation in the customer's vehicle? (The car has been parked enough, lately.)
I can tell you I could not contribute money to ANYTHING until after Christmas. My wife is upset with me now. (Where did all your money go?
Re: Gauging interest on Custom Large Hi. Imp. Injectors IF idle quality is good.
im interested in some biggies like the 83's, if your going to go big, why not get the biggest.
im interested in some biggies like the 83's, if your going to go big, why not get the biggest.
TECH Fanatic
Joined: Mar 2002
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Re: Gauging interest on Custom Large Hi. Imp. Injectors I'm sure Harlan will set this straight, but I'm going to crawl out onto the theoretical ledge here:
I think that the reason to go to low impedance injectors is to cut down on precious rise time. The peak and hold moves the plunger (pintle) in and out of the bore more quickly, like this: |-------+ vs. high impedance saturation type which takes time to move in and out of the bore, like this: /-------\.
The time saved here is significant enough to allow more fuel per injector pulse.
SC-
OK Professor Matt, please correct my error, and teach us the rest. Thanks. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I think that the reason to go to low impedance injectors is to cut down on precious rise time. The peak and hold moves the plunger (pintle) in and out of the bore more quickly, like this: |-------+ vs. high impedance saturation type which takes time to move in and out of the bore, like this: /-------\.
The time saved here is significant enough to allow more fuel per injector pulse.
SC-
OK Professor Matt, please correct my error, and teach us the rest. Thanks. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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On The Tree
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Re: Gauging interest on Custom Large Hi. Imp. Injectors OK, They gave me bad info, I just checked with the source and indeed 55#@42.5psi is the largest possible and will be ready in 2 weeks, that is still a good sized injector at LS1 fuel pressures, probably enough for around 750-800 hp(perfect world calculations say 875hp), at our pressures they come close to a 75# injector, let me know if you guys are still interested, if we get 10 sets the price is $425 plus shipping
<small>[ December 16, 2002, 12:55 PM: Message edited by: Formulation ]</small>
<small>[ December 16, 2002, 12:55 PM: Message edited by: Formulation ]</small>
Re: Gauging interest on Custom Large Hi. Imp. Injectors My sources tell me that the high imped. Siemen 55's have been released.
I am gonna go with low imped. 83's so I will have to figure out a plan to make all the parts work.
I am gonna go with low imped. 83's so I will have to figure out a plan to make all the parts work.
Moderator
Joined: Nov 2001
Posts: 3,048
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From: Raleigh, NC
Re: Gauging interest on Custom Large Hi. Imp. Injectors </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Formulation:
<strong> OK, They gave me bad info, I just checked with the source and indeed 55#@42.5psi is the largest possible and will be ready in 2 weeks, that is still a good sized injector at LS1 fuel pressures, probably enough for around 750-800 hp(perfect world calculations say 875hp), at our pressures they come close to a 75# injector, let me know if you guys are still interested, if we get 10 sets the price is $425 plus shipping </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">If the price is $425, you've got a sale! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
<strong> OK, They gave me bad info, I just checked with the source and indeed 55#@42.5psi is the largest possible and will be ready in 2 weeks, that is still a good sized injector at LS1 fuel pressures, probably enough for around 750-800 hp(perfect world calculations say 875hp), at our pressures they come close to a 75# injector, let me know if you guys are still interested, if we get 10 sets the price is $425 plus shipping </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">If the price is $425, you've got a sale! <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />
Teching In
Joined: Aug 2002
Posts: 43
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From: OC, CA
Re: Gauging interest on Custom Large Hi. Imp. Injectors Sorry, the price has changed since this was originally posted e-mail me at indacalinc@attbi.com for availability and pricing, Thanks Dave