Another ITB build thread
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Steve Arndt
- Posts: 7420
- Joined: Sat Mar 10, 2001 12:01 am
Re: Another ITB build thread
Let us know. There are a lot of simple things to try. I had to "rotate" my pushrod tubes about 30 times to get them to seal.
Steve
My Baja Build
My Baja Build
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damo99
- Posts: 208
- Joined: Tue Jan 01, 2008 9:31 pm
Re: Another ITB build thread
hi i have a few questions 1- why doesn't any one use the standard injector position in the
gsxr throttle body
2- what sort of injectors are you useing as i don't want to run fuel rails
thanks
gsxr throttle body
2- what sort of injectors are you useing as i don't want to run fuel rails
thanks
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grelland
- Posts: 990
- Joined: Fri May 13, 2005 2:47 am
Re: Another ITB build thread
1- mainly because they do not spray anywhere near the valvedamo99 wrote:hi i have a few questions 1- why doesn't any one use the standard injector position in the
gsxr throttle body
2- what sort of injectors are you useing as i don't want to run fuel rails
thanks
2- standard bosch ones from a SAAB 900 T 185 cc/min
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damo99
- Posts: 208
- Joined: Tue Jan 01, 2008 9:31 pm
Re: Another ITB build thread
thanks for the reply
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grelland
- Posts: 990
- Joined: Fri May 13, 2005 2:47 am
Re: Another ITB build thread
Short update again.
The PLX arrived on Saturday, and I finally got the chance to get some tuning done
After about an hour worth of tuning, it runs very well, and I am very pleased so far. It feels a lot crisper than the single plenum setup, and I expect it to be even better once I get hold on some longer air horns, and get some more tuning done.
If I only could locate the oil leak now, then I would be a happy man
The PLX arrived on Saturday, and I finally got the chance to get some tuning done
After about an hour worth of tuning, it runs very well, and I am very pleased so far. It feels a lot crisper than the single plenum setup, and I expect it to be even better once I get hold on some longer air horns, and get some more tuning done.
If I only could locate the oil leak now, then I would be a happy man
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grelland
- Posts: 990
- Joined: Fri May 13, 2005 2:47 am
Re: Another ITB build thread
not much to report, which is good
The Ghia serves as my daily driver, commuting daily to the office, and all is well.
I found the oil leak; it was in the juction between the case and the sump, so I simply removed the sump, and the engine is keeping it fluids to the inside
I play around with the various tuning options, and the thing that is annoying me the most right now, is the lack of positive idle stops on the butterflies. I had to flip the TBs around, so the idle stop now works as a WOT stop.... The result is that the idle speed is depending on the tension of the cable from the throttle pedal, and obviously that varies with temperature and a bunch of other parameters, so the idle speed varies from some 800 rpm to maybe 1500... The idle itself is nice and even, but the speed varies. That will be something for the winter's upgrade project
I also replaced my old SAAB 900 turbo sourced injectors with a set of more modern 19cc ones, and it seems the atomization on these are better, as the engine ran quite a lot smoother with the new injectors. I also had to take out quite some amount of fuel from the map, indicating that even with a similar cc rating, the engine ran more efficiently with the newer injectors.
A relatively heavy Ghia with a very heavy driver and a moderately speced 1835 will never be a race-car, so I am now even more inspired than before to finish up the next step in my performance stage, so I will start pulling out all the parts I have gathered for the force-fed 2110 oxy-boxer project, and see what I am missing. Maybe the step from a NA 1835 to a turboed 2110 will be too big, so that I might end up driving it NA next summer, but the bottom line is "I need more POWER"
Here's a shot that proves that the car is indeed a daily driver. These are the bugs accumulated since last weekens'd wash:
The Ghia serves as my daily driver, commuting daily to the office, and all is well.
I found the oil leak; it was in the juction between the case and the sump, so I simply removed the sump, and the engine is keeping it fluids to the inside
I play around with the various tuning options, and the thing that is annoying me the most right now, is the lack of positive idle stops on the butterflies. I had to flip the TBs around, so the idle stop now works as a WOT stop.... The result is that the idle speed is depending on the tension of the cable from the throttle pedal, and obviously that varies with temperature and a bunch of other parameters, so the idle speed varies from some 800 rpm to maybe 1500... The idle itself is nice and even, but the speed varies. That will be something for the winter's upgrade project
I also replaced my old SAAB 900 turbo sourced injectors with a set of more modern 19cc ones, and it seems the atomization on these are better, as the engine ran quite a lot smoother with the new injectors. I also had to take out quite some amount of fuel from the map, indicating that even with a similar cc rating, the engine ran more efficiently with the newer injectors.
A relatively heavy Ghia with a very heavy driver and a moderately speced 1835 will never be a race-car, so I am now even more inspired than before to finish up the next step in my performance stage, so I will start pulling out all the parts I have gathered for the force-fed 2110 oxy-boxer project, and see what I am missing. Maybe the step from a NA 1835 to a turboed 2110 will be too big, so that I might end up driving it NA next summer, but the bottom line is "I need more POWER"
Here's a shot that proves that the car is indeed a daily driver. These are the bugs accumulated since last weekens'd wash:
You do not have the required permissions to view the files attached to this post.
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andy198712
- Posts: 2433
- Joined: Wed Apr 13, 2011 1:01 pm
Re: Another ITB build thread
nice one mate! glad its running well for you!
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supaninja
- Posts: 1658
- Joined: Tue Sep 14, 2010 12:48 pm
Re: Another ITB build thread
Thats clean compared to the bugs on the front of the notch, I wear them as a badge of honor
Glad to hear it's running good. I had to add a idle stop on one of my TB's.
Glad to hear it's running good. I had to add a idle stop on one of my TB's.
'65 notch w/ a squirted type 4
http://supaninjanick.wordpress.com/
'68 "Zombie Response Vehicle" Westy
viewtopic.php?f=14&t=140387
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grelland
- Posts: 990
- Joined: Fri May 13, 2005 2:47 am
Re: Another ITB build thread
Cleaned the bugs off
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grelland
- Posts: 990
- Joined: Fri May 13, 2005 2:47 am
Re: Another ITB build thread
Time for an update.
Not too much to report, which is actually quite good
I am still using the Ghia as my daily transport, and have accumulated some 7000kms this summer. The engine just gets better and better as I constantly try different tuning settings. Lately I have focused on cold starts (It is almost down to freezing temps in the morning here now...) and I have come to a point wher it starts and idles nicely every morning without the need to touch the accelerator. This is without any fast idle valves or things like that.
As I mentionned, winter is approaching fast, and within a few weeks I have to put the Ghia away for the winter. They soak the roads in salt here, and I figure I have done enough welding on this car for a few years to come still...
All in all, I am very pleased with how these ITBs work. The engine responds well to my tuning inputs, and I have learned a ton of EFI-stuff and general engine management from this experience.
Since winters are long, I am well into planning this winters upgrades to the car, and it goes something like this:
-Fix the front-end. I have an alignment and/or steering box issue I need to sort out.
-Put back the dropped spindles
-Rear disks
-New wheels and tires
-New engine
When it comes to the engine, is the status that I have collected most parts for a 2110 oxy, and I have started a build thread in the type V section, but I am still in the thinking box when it comes to the induction system. The plan is to go turbo, but not the first summer. For the turbo version, I will use CB end castings and a German plenum. But I have still not concluded whether I will transfer the 40mm ITBs from my 185, or run it NA with the German plenum setup first. Time will show.
I will also go fully sequential
Not too much to report, which is actually quite good
I am still using the Ghia as my daily transport, and have accumulated some 7000kms this summer. The engine just gets better and better as I constantly try different tuning settings. Lately I have focused on cold starts (It is almost down to freezing temps in the morning here now...) and I have come to a point wher it starts and idles nicely every morning without the need to touch the accelerator. This is without any fast idle valves or things like that.
As I mentionned, winter is approaching fast, and within a few weeks I have to put the Ghia away for the winter. They soak the roads in salt here, and I figure I have done enough welding on this car for a few years to come still...
All in all, I am very pleased with how these ITBs work. The engine responds well to my tuning inputs, and I have learned a ton of EFI-stuff and general engine management from this experience.
Since winters are long, I am well into planning this winters upgrades to the car, and it goes something like this:
-Fix the front-end. I have an alignment and/or steering box issue I need to sort out.
-Put back the dropped spindles
-Rear disks
-New wheels and tires
-New engine
When it comes to the engine, is the status that I have collected most parts for a 2110 oxy, and I have started a build thread in the type V section, but I am still in the thinking box when it comes to the induction system. The plan is to go turbo, but not the first summer. For the turbo version, I will use CB end castings and a German plenum. But I have still not concluded whether I will transfer the 40mm ITBs from my 185, or run it NA with the German plenum setup first. Time will show.
I will also go fully sequential
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Piledriver
- Moderator
- Posts: 22760
- Joined: Sat Feb 16, 2002 12:01 am
Re: Another ITB build thread
Read Steves latest thread//testing using the CB end castings vs. ITBs on a turbo motor.
You might reconsider...
http://www.shoptalkforums.com/viewtopic ... &start=115
You might reconsider...
http://www.shoptalkforums.com/viewtopic ... &start=115
Addendum to Newtons first law:
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
zero vehicles on jackstands, square gets a fresh 090 and 1911, cabby gets a blower.
EZ3.6 Vanagon after that.(mounted, needs everything finished) then Creamsicle.
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andy198712
- Posts: 2433
- Joined: Wed Apr 13, 2011 1:01 pm
Re: Another ITB build thread
grelland wrote:1- mainly because they do not spray anywhere near the valvedamo99 wrote:hi i have a few questions 1- why doesn't any one use the standard injector position in the
gsxr throttle body
2- what sort of injectors are you useing as i don't want to run fuel rails
thanks
2- standard bosch ones from a SAAB 900 T 185 cc/min
would mounting them closer to the head help or not possible?
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Steve Arndt
- Posts: 7420
- Joined: Sat Mar 10, 2001 12:01 am
Re: Another ITB build thread
Piledriver wrote:Read Steves latest thread//testing using the CB end castings vs. ITBs on a turbo motor.
You might reconsider...
http://www.shoptalkforums.com/viewtopic ... &start=115
My tests were N/A, not turbo.
I would choose your hand built plenum and runners that you made over the CB end castings any day.
Steve
Steve
My Baja Build
My Baja Build
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grelland
- Posts: 990
- Joined: Fri May 13, 2005 2:47 am
Re: Another ITB build thread
If the engine was to remain N/A I would not be in doubt, but for a turbo application, would your conclusion still hold up, Steve?
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Steve Arndt
- Posts: 7420
- Joined: Sat Mar 10, 2001 12:01 am
Re: Another ITB build thread
I haven't tried a turbo.
Paul H. mentioned needing to run near double the boost through CB end castings compared to high flow ITBs to make the same power levels on the same engine. I hate linkage, and the tip in vacuum with ITBs. I plan to build an individual runner and single TB plenum for my engine.
Steve
Paul H. mentioned needing to run near double the boost through CB end castings compared to high flow ITBs to make the same power levels on the same engine. I hate linkage, and the tip in vacuum with ITBs. I plan to build an individual runner and single TB plenum for my engine.
Steve
Steve
My Baja Build
My Baja Build