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> What to do to a 2056 with 2.0 DJet, Help get this motor worked out.
Teknon
post Mar 18 2007, 07:28 PM
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Ok Motorheads,

Senerio:
New 2056, Slightly more aggressive than stock Isky VP-228 cam, ported 5pt heads with '74 2.0 D-Jetronics. Crane xr700 009 dizzy. Burch exhaust through SSI HX'ers

Question:
What would be some tricks and tips to make this engine more efficient. (IMG:style_emoticons/default/cool_shades.gif)

I thought of having the MPS adjusted for a 2056, read that somewhere. Would like to put an oil cooler in most likely.

What else would be things to concider. The engine is in boxes ready to assemble.

Please chime in

Joe D
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Twystd1
post Mar 18 2007, 07:54 PM
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Lets start here.

Go with a Jake cam. PERIOD.
Reason: You will absolutely know you have a cam AND A MATCHING SET OF LIFTERS THAT WON'T GO FLAT. This is also a proven cam/lifter combo for the factory FI.

Balance the entire reciprocating assembly.

Get your heads checked and machined by a Type IV pro.

Get your block, cylinders, pistons, pins, rings (end gap), machined and checked out by a Type IV pro.

Use Jakes double thrust cam bearing.

You probably wont need and oil cooler. But it never hurts to add one.

I could go on forever.....

OR: Buy a Jake kit and be done with it.

Whats your budget????

Clayton
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Teknon
post Mar 18 2007, 08:34 PM
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Budget? That's funny. I have a 2563 78.4mm CC chevy journaled x 102mm nicacil cans, short skirt pistons, A re formed combustion chambered highly modified 2.0 heads with nailhead valves, custom Isky valvetrainan"ACT turnkey SDS FI system. Parts will be cryoed and coated. MDS/Jacobs ignition engine in the works. Tell me about a budget.

The 2056 will be balanced locally, the stock 2.0 heads were done by Rimco.

If there is something in this little beater engine as far as low grade mods I'd still like to know.

Really like to get rid of both of them and by an electric motor kit from http://www.electroauto.com/catalog/kits.shtml#voltsporsche
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Bleyseng
post Mar 18 2007, 08:41 PM
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Get the 9550 cam/lifter set from Jake and then you can run the Djet plus have 115hp.

Yep the MPS needs to be adjusted, someone on this BBS does it. (IMG:style_emoticons/default/blink.gif)

Dunno how the Djet works with a 009 dizzy since it doesn't have trigger points. (IMG:style_emoticons/default/chair.gif)
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Teknon
post Mar 18 2007, 08:43 PM
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QUOTE(Bleyseng @ Mar 18 2007, 07:41 PM) *

Dunno how the Djet works with a 009 dizzy since it doesn't have trigger points. (IMG:style_emoticons/default/chair.gif)

Isnt the 914 dizzy a 009? It has tpts
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Twystd1
post Mar 18 2007, 08:49 PM
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I had no idea you knew about engines... YEA...!!!!!!!

I am guessing at this point.... You know more about Type IVs than most of the fellas here. You have been there done that....

So give me some help here.

What data do you need that you don't already have?





AND:

How does your stroker motor run? Who built it? And how big is the grin on your face when you stab the throttle?

If ya ever sell it... Keep me in mind.....

Cheers,

Clayton
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Teknon
post Mar 18 2007, 09:01 PM
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Well djet is not really adventageous to use for ultimate performance but in this case its all its gunna get. I was amazed that you could teak the MPS so I was wondering what other tweaks there could be.
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914Sixer
post Mar 18 2007, 09:05 PM
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Factory D-Jet dizzy for 2.0 ends in 009 to add to the confusion. It cannot be mistaken though, it does have the trigger points.
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Gint
post Mar 18 2007, 09:28 PM
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Hey Joe! So is that my distributor? (IMG:style_emoticons/default/wink.gif)
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jk76.914
post Mar 18 2007, 10:04 PM
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I'm running an Isky 229 with D-Jet. Though there isn't much overlap (12 degrees at .050" lift, just like your VP228), I saw a significant reduction in vacuum at idle, though my idle was still pretty smooth and quiet. I experimented with advancing the timing at idle, and it improved significantly, which makes sense if overlap is indeed the issue. I'm in the process of modifying a spare distributor to reduce the total centrifugal advance, so I can run more advance at idle but not exceed 32 degrees (plus or minus) total at 3500 RPM. I'll know later this season.

The second thing I noticed was a lean miss at about 3000-3500 RPM at part throttle cruise. I "fixed" it by installing slightly higher flowing injectors, but I think the real solution (not proven yet!) is to tweak the MPS for richer running. Trouble is, I'm convincing myself that the problem is that the diaphram transitions off the part throttle stop too late, because if I open the throttle more (reducing the vacuum, and thereby starting the transition) the miss goes away. Unfortunately, this isn't one of the adjustments available. I hope to get a better handle on this this season as well.... There have been a number of posts from other folks having this problem as well......

I have no regrets in going with Isky.

Good luck with the engine... Jim
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Teknon
post Mar 18 2007, 10:17 PM
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QUOTE(Gint @ Mar 18 2007, 08:28 PM) *

Hey Joe! So is that my distributor? (IMG:style_emoticons/default/wink.gif)


Ha ha no yours is sitting near Kevins MPS in the garage. Are you still in the Denver area? LOL (IMG:style_emoticons/default/bootyshake.gif)
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Krieger
post Mar 18 2007, 10:18 PM
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Bump the fuel pressure up. My 2270 with djet and a mild web-cam runs 37 psi with stock regulator adjusted. Leave the MPS alone. Put a resistor in line with the head sensor to trick the brain into thinking its colder than it is. I put an 02 sensor in my exhaust with a monitor that I built off Pelican parts to dial it in on the road. I ended somewhere about 425 ohms to get right mixture. Dyno test showed go A/F mixture throughout the rpm band.
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Krieger
post Mar 18 2007, 10:21 PM
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Oh, check the throttle position sensor for your miss. It is posible the tracks may be worn as the arm sweeps across them as the throttle opens.
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Teknon
post Mar 18 2007, 10:43 PM
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QUOTE(jk76.914 @ Mar 18 2007, 09:04 PM) *

I'm running an Isky 229 with D-Jet. Though there isn't much overlap (12 degrees at .050" lift, just like your VP228), I saw a significant reduction in vacuum at idle, though my idle was still pretty smooth and quiet. I experimented with advancing the timing at idle, and it improved significantly, which makes sense if overlap is indeed the issue. I'm in the process of modifying a spare distributor to reduce the total centrifugal advance, so I can run more advance at idle but not exceed 32 degrees (plus or minus) total at 3500 RPM. I'll know later this season.

The second thing I noticed was a lean miss at about 3000-3500 RPM at part throttle cruise. I "fixed" it by installing slightly higher flowing injectors, but I think the real solution (not proven yet!) is to tweak the MPS for richer running. Trouble is, I'm convincing myself that the problem is that the diaphram transitions off the part throttle stop too late, because if I open the throttle more (reducing the vacuum, and thereby starting the transition) the miss goes away. Unfortunately, this isn't one of the adjustments available. I hope to get a better handle on this this season as well.... There have been a number of posts from other folks having this problem as well......

I have no regrets in going with Isky.

Good luck with the engine... Jim


Wow Jim, Your the man. I've got to study up on all you said. It's over my head right now, but I'm gunna learn that stuff. Mind if I pick your brain in time? Joe (IMG:style_emoticons/default/boldblue.gif)
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malaga_red75
post Mar 18 2007, 10:44 PM
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Trying to learn about engines, as I might be doing a 2056 myself. What does MPS mean??

Thanks


-Peter
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Gint
post Mar 18 2007, 10:55 PM
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QUOTE(Teknon @ Mar 18 2007, 09:17 PM) *

QUOTE(Gint @ Mar 18 2007, 08:28 PM) *

Hey Joe! So is that my distributor? (IMG:style_emoticons/default/wink.gif)


Ha ha no yours is sitting near Kevins MPS in the garage. Are you still in the Denver area? LOL (IMG:style_emoticons/default/bootyshake.gif)

If you'd come out once in a while you'd know!

Come to the swap next Saturday and bring it with you.
Dart Auto 9am-1pm, 3/24/2007
Google Maps to Dart Auto, Commerce City
www.dartauto.com
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Teknon
post Mar 18 2007, 11:07 PM
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QUOTE(Gint @ Mar 18 2007, 09:55 PM) *

QUOTE(Teknon @ Mar 18 2007, 09:17 PM) *

QUOTE(Gint @ Mar 18 2007, 08:28 PM) *

Hey Joe! So is that my distributor? (IMG:style_emoticons/default/wink.gif)


Ha ha no yours is sitting near Kevins MPS in the garage. Are you still in the Denver area? LOL (IMG:style_emoticons/default/bootyshake.gif)

If you'd come out once in a while you'd know!

Come to the swap next Saturday and bring it with you.
Dart Auto 9am-1pm, 3/24/2007
Google Maps to Dart Auto, Commerce City
www.dartauto.com


I have to work on TLB next Sat/Sunday finally, The place is off I70 on Brighton, but I can meet before 10am............
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Teknon
post Mar 18 2007, 11:11 PM
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QUOTE(malaga_red75 @ Mar 18 2007, 09:44 PM) *

Trying to learn about engines, as I might be doing a 2056 myself. What does MPS mean??

Thanks


-Peter


Manifold Pressure Sensor
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TROJANMAN
post Mar 18 2007, 11:13 PM
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Looks nice in pictures.........
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Hey Joe (IMG:style_emoticons/default/wavey.gif)
have you been hibernating? (IMG:style_emoticons/default/gint2.gif)
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Teknon
post Mar 18 2007, 11:16 PM
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QUOTE(TROJANMAN @ Mar 18 2007, 10:13 PM) *

Hey Joe (IMG:style_emoticons/default/wavey.gif)
have you been hibernating? (IMG:style_emoticons/default/gint2.gif)


You might say that Greg. Acually hibernating would have been better. But the sun started shining again. (IMG:style_emoticons/default/bye1.gif)
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