Home | Register | Login | Contact Us

 
Auto Math
Classifieds
Forum
Gallery
Games
Garage
Tech Articles
Utilites
 
FAQFAQ    SearchSearch    RegisterRegister    Log inLog in    Log in to check your private messagesLog in to check your private messages    Forum Subscriptions1/4 Mile Table 

HP EFI CNP upgrade
Goto page 1, 2, 3, 4, 5  Next
 
Post new topic   Reply to topic    SMOKEmUP.com Forum Index -> Chevy - Small Block Gen 1
View previous topic :: View next topic  
Author Message
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81572.74 points


1971 Chevrolet Chevelle

PostPosted: Tue Dec 20, 2016 11:43 am    Post subject: HP EFI CNP upgrade Reply with quote

Hey all that are still out there. I have started my CNP upgrade to allow for sequential firing of the HP EFI system as well as improving spark.

36 tooth crank trigger was recommended for my application.



Kit bolted right up with no issues. All adjusted to .040 clearance all the way around. Cam sensor is next which will be a bit more challenging but will be triggered right off the Jesel upper pulley.

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
Back to top
View user's profile Send private message
10sec.et
Member


Joined: 29 Mar 2006
Posts: 3473
Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Wed Dec 21, 2016 12:39 am    Post subject: Reply with quote

thats pretty cool. ive never ran one with that setup. how is the HP EFI coming along?
_________________
af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

Back to top
View user's profile Send private message
Big Dave
Moderator


Joined: 04 Dec 2005
Posts: 2646
Location: Tampa Florida
119973.02 points



PostPosted: Wed Dec 21, 2016 11:02 am    Post subject: Reply with quote

I was thinking the HP system was a Throttle Body Injection. Is it Port Injection, and if so are you switching from batch to sequential fire? Wouldn't that require a different computer?

Big Dave: Still playing with carbs
Back to top
View user's profile Send private message
10sec.et
Member


Joined: 29 Mar 2006
Posts: 3473
Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Wed Dec 21, 2016 1:48 pm    Post subject: Reply with quote

thats the beauty of the HP EFI.... its whatever you need it to be. only time he will need to switch to a different computer is if he goes to drive by wire and/or wants to control an automatic trans. then he would use the same engine harness, go to a Holley Dominator computer and simply add the rest of the wiring and components.
_________________
af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

Back to top
View user's profile Send private message
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81572.74 points


1971 Chevrolet Chevelle

PostPosted: Thu Dec 22, 2016 11:57 am    Post subject: Reply with quote

Yeah the system was working great under batch fire but needed the sequential fire to really shine. It will have better timing control and spark with the crank/cam sensors and smart coils. Should idle a lot better and pull through the rpms better with more spark. Timing curve can be adjusted too which should be slick. The cam sensor on the Jesel upper pulley is the next trick. Since the 556-119 kit for the Jesel drive is really not meant to sit under the water pump at all even with a long water pump I will be fabricating something to get that working. Definitely excited to get this upgrade done. I will be selling off the old ignition.

Keith is right just a software selection is all that is needed to switch over to sequential.

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
Back to top
View user's profile Send private message
SMOKEmUP
PostMaster


Joined: 30 May 2002
Posts: 3169

65097.54 points


1979 Chevrolet Camaro

PostPosted: Thu Dec 22, 2016 11:22 pm    Post subject: Reply with quote

What's the plan for the cam sensor? Do you have the sensor already? where are you going to mount the sensor?
_________________
Stop running from your pain and embrace your pain. Your pain is going to be a part of your prize.

I challenge you to push yourself.
Back to top
View user's profile Send private message Visit poster's website
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81572.74 points


1971 Chevrolet Chevelle

PostPosted: Fri Dec 23, 2016 1:22 pm    Post subject: Reply with quote

I have the 556-119 cam sensor kit for the Jesel Belt drive but it won't fit unless I use a remote water pump. I have an evil plan though which I am sure you will find entertaining. It turns out the Edelbrock water pump has some threaded bosses that might work nicely for attaching a home made bracket that may just work for the cam sensor.
_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
Back to top
View user's profile Send private message
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81572.74 points


1971 Chevrolet Chevelle

PostPosted: Sat Dec 31, 2016 1:10 am    Post subject: Reply with quote

The cam sensor bracket was a bit more difficult to fabricate without a Bridgeport but this is what I came up with. The Edelbrock water pump has a cam button preload stud boss (dead center of the cam) along with the power steering pump boss. With a little modification it looks like we have a winner. The insert machining was the real bitch.










_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
Back to top
View user's profile Send private message
Big Dave
Moderator


Joined: 04 Dec 2005
Posts: 2646
Location: Tampa Florida
119973.02 points



PostPosted: Sat Dec 31, 2016 10:58 am    Post subject: Reply with quote

That was some fancy whittling you did there. Looks good.

Big Dave
Back to top
View user's profile Send private message
10sec.et
Member


Joined: 29 Mar 2006
Posts: 3473
Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Sun Jan 01, 2017 3:28 am    Post subject: Reply with quote

thats pretty cool! how did you do that without a bridgeport?
_________________
af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

Back to top
View user's profile Send private message
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81572.74 points


1971 Chevrolet Chevelle

PostPosted: Sun Jan 01, 2017 9:30 am    Post subject: Reply with quote

All by hand with 12" caliper, scribe, sharpie, hack saw, drill and die grinder.
_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
Back to top
View user's profile Send private message
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81572.74 points


1971 Chevrolet Chevelle

PostPosted: Mon Jan 02, 2017 5:14 pm    Post subject: Reply with quote

The final piece was modified a bit more for adjustments. This was a pain in the as but I think it was worth the effort.




_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
Back to top
View user's profile Send private message
jeep_406
Member


Joined: 12 Sep 2002
Posts: 1661
Location: Tewksbury, Mass 01876
53123.48 points


1972 Chevrolet Nova

PostPosted: Tue Jan 17, 2017 12:07 am    Post subject: Reply with quote

Paul, what cfm throttle body will you be running?
I'm looking into running EFI on my 408 inch Nova. Looking for better driveability and somewhere around 600 HP on pump gas.
Hope everyone has been well.

Driving
Back to top
View user's profile Send private message Send e-mail
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81572.74 points


1971 Chevrolet Chevelle

PostPosted: Tue Jan 17, 2017 7:32 am    Post subject: Reply with quote

Hi Gene,
The HP EFI system came with a 1000cfm throttle body. It flows and revs above 6200rpm now which certainly was the problem with the Pro-Jection system.

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
Back to top
View user's profile Send private message
Paul P
Member


Joined: 15 Aug 2002
Posts: 2403
Location: Townsend, Mass.
81572.74 points


1971 Chevrolet Chevelle

PostPosted: Sat Mar 18, 2017 3:03 pm    Post subject: Reply with quote

Been working on this for the past 2 months since my last post. Almost ready to fire it up. Sold the Jacobs Nitrous mastermind and bought the 554-111 progressive nitrous relay so that the HP EFI ECU can control the juice. There is so much you can do with it in the HP EFI software program. Technically you could have 4 kits 😳 controlled by it.
_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    SMOKEmUP.com Forum Index -> Chevy - Small Block Gen 1 All times are GMT - 5 Hours
Goto page 1, 2, 3, 4, 5  Next
Page 1 of 5

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum
Home | Contact Us | Automath | Cam Files | Dyno Search | Forum | Garage | Picture Gallery | Reaction Timer

Copyright 1997-2016 SMOKEmUP.com All rights reserved.
Advertising Info     Disclaimer     Privacy Policy