Was ITB size for 2270 motor Now Single plenum 2270 |
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Was ITB size for 2270 motor Now Single plenum 2270 |
cgnj |
Mar 15 2016, 03:41 PM
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#1
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Senior Member Group: Members Posts: 623 Joined: 6-March 03 From: Medford, NJ Member No.: 403 Region Association: None |
I have been running 45 dells on 2270 with 34mm vents. Not sure if it was the cam choice (163/86b0, but it was much easier to drive with than with the 38/39 vents.
I was going to gut my spare dells for this project, but I think they are worth more in the box. So, for street 2270 what size motorcycle from wich bike tb should I be looking at for a first build? Thanks in advance, Carlos |
cgnj |
Mar 27 2016, 08:19 PM
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#2
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Senior Member Group: Members Posts: 623 Joined: 6-March 03 From: Medford, NJ Member No.: 403 Region Association: None |
Progess to date.
Vanagon 2.1 plenum is a dead end I think. Volome is approximately 1600 cc. Also the throttle body is at one end so there are two favored and two disadvantataged runners. Although it comes with a 50mm tb, there doesn't seem to be enough rom for a 55-58 mm tb. So, I pulled my last 2.0 plenum out of the box. First advantage, tb is more centrally located, runners should be appear to be the same. Volume is approx 2350 cc min., (+- measurement losses). I wanted to avoid using a 2.0 plenum because I expect that i will need a MAF to since I am currently on a split durarion 163/86b cam. (plus it was the last one in the box). I'm married to 2.0 plenum now. Motor is on stand, I will do leakdown, plenum packed for trip to machine shop. Need to puzzle out the volvo tb. It pulls in the wrong direction. Prepped the runners for powder. Prepped headers for paint. Pulled out heat exchangers and triad. I am going to test this with headers and heat exchangers. At this point, Im going with 2.0 green injectors. I have them. I am looking for a 2270 MSQ file if someone can pm one to me great. I'm hoping to fire this up next weekend. |
Mark Henry |
Mar 27 2016, 09:34 PM
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#3
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that's what I do! Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada |
Progess to date. Vanagon 2.1 plenum is a dead end I think. Volome is approximately 1600 cc. Also the throttle body is at one end so there are two favored and two disadvantataged runners. Although it comes with a 50mm tb, there doesn't seem to be enough rom for a 55-58 mm tb. So, I pulled my last 2.0 plenum out of the box. First advantage, tb is more centrally located, runners should be appear to be the same. Volume is approx 2350 cc min., (+- measurement losses). I wanted to avoid using a 2.0 plenum because I expect that i will need a MAF to since I am currently on a split durarion 163/86b cam. (plus it was the last one in the box). I'm married to 2.0 plenum now. Motor is on stand, I will do leakdown, plenum packed for trip to machine shop. Need to puzzle out the volvo tb. It pulls in the wrong direction. Prepped the runners for powder. Prepped headers for paint. Pulled out heat exchangers and triad. I am going to test this with headers and heat exchangers. At this point, Im going with 2.0 green injectors. I have them. I am looking for a 2270 MSQ file if someone can pm one to me great. I'm hoping to fire this up next weekend. The 914 injectors are low impedance so you will have to run a resistor pack. The factory D-jet plenum will work and you can find a used one cheap to replace it if needed. Personally I would use the d-jet so you can drive now, but build a SDS style intake along the lines in the link below. They do state "Velocity stacks to go on the end of the runners were shown to improve airflow by 19% on the flow bench over straight tubes." With that kind of improvement I'd be giving it a go. http://www.sdsefi.com/air12.html |
cgnj |
Mar 27 2016, 09:45 PM
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#4
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Senior Member Group: Members Posts: 623 Joined: 6-March 03 From: Medford, NJ Member No.: 403 Region Association: None |
The 914 injectors are low impedance so you will have to run a resistor pack. The factory D-jet plenum will work and you can find a used one cheap to replace it if needed. Personally I would use the d-jet so you can drive now, but build a SDS style intake along the lines in the link below. They do state "Velocity stacks to go on the end of the runners were shown to improve airflow by 19% on the flow bench over straight tubes." With that kind of improvement I'd be giving it a go. http://www.sdsefi.com/air12.html The vanagon plenum won't be a complete waste I don't have the tooling to make a velocity stack. I expect to cut it up and use the stacks if a custom plenum is needed. Carlos |
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