The Twin Screw Thread
12-10-2005, 11:44 AM
#32
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Glad we got your ok on this 
There are a lot of stand up guys who have given thousands of dollars to Andy. Unfortunately many of them right now are waiting for parts promised long ago or not getting the installation help they were promised before purchase. So I started this thread in the hopes we could help ourselves since the vendor has lost interest.
There are a lot of stand up guys who have given thousands of dollars to Andy. Unfortunately many of them right now are waiting for parts promised long ago or not getting the installation help they were promised before purchase. So I started this thread in the hopes we could help ourselves since the vendor has lost interest.
Originally Posted by MrLexse
Andy is a stand up guy. This is what I was told and that is what I have come to know. Maybe when (and if) he decides to "chime in" again on a regular basis, we'll have the additional benefit of his insight, but until then, remember he's human. Many of us are better off today because he gave it a shot, regardless how things turned out. It seems to me that if the Supermodel Forum is no longer acting as the knowledge base and discussion center for twin screwers, Tony's idea to use this forum for twin screw threads, Q&A, developments etc. sounds good. Tonys participation makes it even better. Let the games begin.
12-10-2005, 12:05 PM
#33
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Jim,
Sorry. I didn't mean to come off in a patronizing manner. I can only speak from my personal dealings with Andy. Although it took him awhile to finalize things with me also, he did.
Your idea of sharing this info still seems like a real good one to me.
Sorry. I didn't mean to come off in a patronizing manner. I can only speak from my personal dealings with Andy. Although it took him awhile to finalize things with me also, he did.
Your idea of sharing this info still seems like a real good one to me.
12-10-2005, 12:08 PM
#34
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Originally Posted by Bill Ball
.....
Mike: Unless Andy is actively processing the posts on his forum, I don't see how he could be upset with posting here. .....
Mike: Unless Andy is actively processing the posts on his forum, I don't see how he could be upset with posting here. .....
12-10-2005, 12:25 PM
#35
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Mike,
Swapping ideas and fixes and even critiquing the system is all good.
As for Andy, he did a great job getting this thing going and no one wants to make him into a villain but he still needs to complete the deals he made with many people. I like Andy but it has been very frustrating dealing with him on my second system. Members have blasted a certain vendor recently over shoddy customer service and communication and quite honestly Andy has been every bit as bad.
But, this thread is about the system and hopefully the Andy stuff will die off as he cleans up all of his loose ends.
Swapping ideas and fixes and even critiquing the system is all good.
As for Andy, he did a great job getting this thing going
and no one wants to make him into a villain but he still needs to complete the deals he made with many people. I like Andy but it has been very frustrating dealing with him on my second system. Members have blasted a certain vendor recently over shoddy customer service and communication and quite honestly Andy has been every bit as bad.But, this thread is about the system and hopefully the Andy stuff will die off as he cleans up all of his loose ends.
Originally Posted by mspiegle
You're right, the forum is dead. Regardless of what goes on here or there, I don't think Andy cares either way. I thought he'd ask me to close it down, but he didn't even do that (i wouldn't be surprised if he forgot about it). I only continue to host it so it acts as a knowledgebase for anyone who has a login. I know he's finally busy with his own life once again (now that 928supermodel is "dead"), and i'm happy for him. He's got NOTHING to be upset about, so please do share all the info you can to keep this limited production-run working. All I ask is that people just stop talking about him with ANY negativity... there's no point in villanizing him. Just remember him as someone who tried to give us another option for our cars.
12-10-2005, 12:29 PM
#36
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Actually no he didn't, there was no fab work needed.
And I do believe Andy is a nice guy... and burned out.
And I do believe Andy is a nice guy... and burned out.
Originally Posted by heinrich
Andy always said it was something when we bought from him, that we would have to do a lot of fabbing on. I think Andy did us all a favour. Can't say whether he is a nice guy or not, :
12-10-2005, 12:32 PM
#37
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I think the 'taking awhile' thing gets a lot more stressful when you know that he has moved on with his life.
Originally Posted by MrLexse
Jim,
Sorry. I didn't mean to come off in a patronizing manner. I can only speak from my personal dealings with Andy. Although it took him awhile to finalize things with me also, he did.
Your idea of sharing this info still seems like a real good one to me.
Sorry. I didn't mean to come off in a patronizing manner. I can only speak from my personal dealings with Andy. Although it took him awhile to finalize things with me also, he did.
Your idea of sharing this info still seems like a real good one to me.
12-10-2005, 01:09 PM
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In a nut shell this is how i gather the BEGI unit works.
the center Hex screw adjusts the fuel presure at 0 manifold pressure ie:NO BOOST and NO VACUUM.
you do this during the set up when you start the car and remove the signal line from the BEGI UNIT....turn the center alan screw until you get the fuel pressure you want at the zero point.... X lbs
When you place that signal line back on the fuel presure will drop as you have removed all the restirctions from the line that the BEGI provides...in Darriens case the fuel pressure should drop to appx 36psi, which is the factory setting on his car with the 24lb injectors....it did, appx 39psi actually.
now, as you transition from vac to boost as your foot goes down
you obviously hit a point of 0 manifold presure in the transition. This is the point where evering things starts to happen. At this ZERO POINT, i like to call it, the BEGI unit will comand a fuel pressure that you set when you took the signal line off during inital set up...Xlbs.
from this point(ZERO POINT) the fuel pressure will rise to a point determined where you set the needle valve. the more closed the needle valve, the higher the resulting fuel pressure you will see.....the more open the valve the lower the fuel press under boost.
I always wondered if the guys running the GTs with the tip in issues had this ZERO POINT fuel pressure set high enough. Obviously if you want to help prevent tip in detonation you want the fueling adequate....there are other factors as well, ignition timing, cams on the GT that mak a difference but the only thing we have control of at this point is the fuel pressure
I got my overhaul kit last night and installed it and my car is back to normal. There was a hair line crack in the metal foil shim. doesnt look like much but it would spike my fuel pressure to over my gauge limit and woudl make the car undriveable. EASY FIX and easy to overhaul the unit.
below is a schematic of it with some notes
pics of the foil shim with the crack..
the piston as it protrudes from the bottom of the upper half of the unit. The dark stuff you see is a grease applied at the factory to keep the piston lubricated..over time it perhaps wouldnt be a bad idea to check the foil shim or the lube on the piston.
HTH
the center Hex screw adjusts the fuel presure at 0 manifold pressure ie:NO BOOST and NO VACUUM.
you do this during the set up when you start the car and remove the signal line from the BEGI UNIT....turn the center alan screw until you get the fuel pressure you want at the zero point.... X lbs
When you place that signal line back on the fuel presure will drop as you have removed all the restirctions from the line that the BEGI provides...in Darriens case the fuel pressure should drop to appx 36psi, which is the factory setting on his car with the 24lb injectors....it did, appx 39psi actually.
now, as you transition from vac to boost as your foot goes down
you obviously hit a point of 0 manifold presure in the transition. This is the point where evering things starts to happen. At this ZERO POINT, i like to call it, the BEGI unit will comand a fuel pressure that you set when you took the signal line off during inital set up...Xlbs.from this point(ZERO POINT) the fuel pressure will rise to a point determined where you set the needle valve. the more closed the needle valve, the higher the resulting fuel pressure you will see.....the more open the valve the lower the fuel press under boost.
I always wondered if the guys running the GTs with the tip in issues had this ZERO POINT fuel pressure set high enough. Obviously if you want to help prevent tip in detonation you want the fueling adequate....there are other factors as well, ignition timing, cams on the GT that mak a difference but the only thing we have control of at this point is the fuel pressure
I got my overhaul kit last night and installed it and my car is back to normal. There was a hair line crack in the metal foil shim. doesnt look like much but it would spike my fuel pressure to over my gauge limit and woudl make the car undriveable. EASY FIX and easy to overhaul the unit.
below is a schematic of it with some notes
pics of the foil shim with the crack..
the piston as it protrudes from the bottom of the upper half of the unit. The dark stuff you see is a grease applied at the factory to keep the piston lubricated..over time it perhaps wouldnt be a bad idea to check the foil shim or the lube on the piston.
HTH
12-10-2005, 01:27 PM
#39
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Good call Tony. I don't recall us setting the 0 point
Tony said
I always wondered if the guys running the GTs with the tip in issues had this ZERO POINT fuel pressure set high enough.
Tony said
I always wondered if the guys running the GTs with the tip in issues had this ZERO POINT fuel pressure set high enough.
12-10-2005, 01:34 PM
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Ken,
I am attaching four pictures of the cold air intake. They should give you a good idea of what’s involved. Ken if you, or anyone else thinks this will work for them email me at daryllmiller@hotmail.com and I will return email with a parts list, instructions, and complete pictures.
Andy, if you are reading this. THANK YOU for selling me this system. You have helped me renew my interest in the 928. I would be very surprised if you made one cent on this. I am sorry something that you loved and had such a passion for is causing you pain. Sometimes a guy just gets burnt out.
For those out there that need Tech. help installing there system, having problems, or want to share new ideas. That’s what this thread is all about.
Soon I am going to learn how to add one of those happy faces but for now I am having enough trouble just up loading a picture.
I am attaching four pictures of the cold air intake. They should give you a good idea of what’s involved. Ken if you, or anyone else thinks this will work for them email me at daryllmiller@hotmail.com and I will return email with a parts list, instructions, and complete pictures.
Andy, if you are reading this. THANK YOU for selling me this system. You have helped me renew my interest in the 928. I would be very surprised if you made one cent on this. I am sorry something that you loved and had such a passion for is causing you pain. Sometimes a guy just gets burnt out.
For those out there that need Tech. help installing there system, having problems, or want to share new ideas. That’s what this thread is all about.
Soon I am going to learn how to add one of those happy faces but for now I am having enough trouble just up loading a picture.
12-10-2005, 01:41 PM
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Tony's idea to use this forum for twin screw threads, Q&A, developments etc. sounds good. Tonys participation makes it even better. Let the games begin.
Good or bad, what ever i can add i hope it helps. I hope every one else who has ideas, brings them forward as well...good..bad...silly or how ever they deam them.
I haven't had my own supermodel for a while, but IIRC, that "pipe" in front of the SC for the IC is actually an IC OUTPUT (not input). It was designed that way for a reason. If you put water INTO it, there is a chance that water would go in, and run out the bottom of the IC (and not fill the entire IC up thereby reducing efficiency).
Everytim i pull that small 1/4" hose off the top, i get water gushing out with the I/C pump running
SO far so good is all i can say if its wrong.
Tony took his work to the next level in a serious way, ..
DR is the one who needs the big plug here...hes taken it by the horns and moved by leaps and bounds.
I don't think Andy would call it a favor...
He can call it what he likes but in my eye he's been pretty disrespectful to many peoples request for help of him or status of parts from him.
' nuff of the Andy chat, he gave us a workable functional supercharger litterally from the workings of a small garage.
how he handles him self with his his customers is a bed his reputation has to sleep in.I still have this pic he sent of the initial fit ment of an Eaton M90...it took alot of time, work, and frustration, thats for sure...he will always get a
and respect for what he undertook in my bookOnward...........................................................
12-10-2005, 01:44 PM
#42
Tony - that metal shim - is it adjustable how thick it can be, so that if you do need to adjust the top pressures you will not rip it?
Boy, all this would be mute if you guys could get those LH's tuned with the shark tuner. No more 100psi fuel pressures.
Boy, all this would be mute if you guys could get those LH's tuned with the shark tuner. No more 100psi fuel pressures.
12-10-2005, 01:58 PM
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Originally Posted by BrendanC
Tony - that metal shim - is it adjustable how thick it can be, so that if you do need to adjust the top pressures you will not rip it?
Boy, all this would be mute if you guys could get those LH's tuned with the shark tuner. No more 100psi fuel pressures.
Boy, all this would be mute if you guys could get those LH's tuned with the shark tuner. No more 100psi fuel pressures.
I believe so. They sent me a bunch of extra ones so i think i can stack an other one behind it. I just rebuilt it the way it came...i didnt want to add another variable to trouble shoot if somehting wasnt right when i tested it.
Shark tuner is the answer, but i cant afford to spit out the $$$$ for one right now. Holidays, ...kids...strike preperation..all that fun stuff.
Once i get a few things set, buy the required chips, burner etc, and perhaps read over the manual Id love to dive into it.....
its defintiely the way to go and i cant wait to hear some feed back from those with the higher HP cars playing with it.
12-10-2005, 02:13 PM
#44
I think they were talking about rental.
Strike - Good luck. The way I solve the holidays is that James my three year old gets lots of boxes in the mail. They are "his parcels" and he opens them, and well, sometimes its a cross-over, maybe a piston ring expander, etc.
Strike - Good luck. The way I solve the holidays is that James my three year old gets lots of boxes in the mail. They are "his parcels" and he opens them, and well, sometimes its a cross-over, maybe a piston ring expander, etc.
12-10-2005, 02:42 PM
#45
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I hope that the SharkTuner will be useful to you brave guys :-)
The s/c cars was the whole reason that it was developed. I must say that some of the very high fuel pressure people are using sound very scary - risk of fire etc. Also, fuel injectors aren't designed for these very high pressures, I have read. So they may not be closing too well at those high pressures...
Even with 42lb injectors you will have to raise the fuel pressure above rated to get the highest power levels, but at least with the SharkTuner you will be able to get a good idle, and map accurately all over the range to WOT. And the pressure rise required will be much less that with the same power and smaller injectors.
There is no reason that a set of Sharktuner optimsed chips could become available for some standard versions of Andy's kit. Then the cost would be reasonable, especially with a SharkTuner rental option.
Work on the EZK version is progressing well !
I'm now going off line......
The s/c cars was the whole reason that it was developed. I must say that some of the very high fuel pressure people are using sound very scary - risk of fire etc. Also, fuel injectors aren't designed for these very high pressures, I have read. So they may not be closing too well at those high pressures...
Even with 42lb injectors you will have to raise the fuel pressure above rated to get the highest power levels, but at least with the SharkTuner you will be able to get a good idle, and map accurately all over the range to WOT. And the pressure rise required will be much less that with the same power and smaller injectors.
There is no reason that a set of Sharktuner optimsed chips could become available for some standard versions of Andy's kit. Then the cost would be reasonable, especially with a SharkTuner rental option.
Work on the EZK version is progressing well !
I'm now going off line......
