Messages

1

Spud Miller's Cave / Re: ETC limiter advise

« on: July 24, 2017, 04:27:01 PM »

Have had the same problem, ETC kicking in 1500-2000 rpm's to early. The answer i got was to try to shield power leads and also mount suppressed plug cables. I have tried to shielded  cables, ekstra grounding, I don't want to use suppressed cables as i need moore spark from my Don Zig Mag. As for now I use the old set-up with Autometer rev limiter and a eksternal signal converter for the shift-light and tach, and that works perfect. I would love to see a solution as I have already decided to upgrade to a Hunt H3 mag that puts out 3x the amp compare to the old one.

2

Spud Miller's Cave / Re: Spool size on a Crower IR injection.

« on: May 29, 2016, 03:19:15 PM »

Bill, you are right that was one of the problems. We have ajusted the butterflys and opened the up a little.
The challenge is the camshaft, witch does not produce vacume at idle. To compensate for lack of vacume we have to plug the air bleed holes, similar to some blower engine set-ups. As said the engine sound and respond good now

Alan
This engine is not mine, I just have helped out some. We are not a big comunity of vintage drag racers, but growing steadily Check out www.svda.se under the menber section.
We usually attend two race's at Kjula Dragway, and this year we might be able to attend at one race at Tierp Arena, check it out, world class track, http://tierparena.com/

/Kjell

3

Spud Miller's Cave / Re: Spool size on a Crower IR injection.

« on: May 29, 2016, 11:45:31 AM »

Ok here are the resault
First we widen the spool slot and rounded off the ramp. This helped some, but we didn't get get the respons we where looking for. So we changed the approtch, focusing on the air, to get more vacume. This unit came from a fuel injection shop in the US, as was resently serviced. But the butterflies was not seated right and a little off the sync, left and right side. After this was fixed, the engine started to work a little better. Still a little too much system pressure, making it very nervous on the leakdown. We consentrated to keep the Leakdown around 26-30%. The vacume was still too veak, but this is due to the extreme cam profile, with over 320 degrees of duration and 112 degrees of lobe seperation.
We desided to plug the air bleed holes in the nozzles, and that was the trick, bang spot on
We ended up with this set-up before calling in the day;
Around 28% leakdown
Main bypass was set to open at 4 psi with a #105 pill. (a tad to lean, so we will try a #95 pill next)
Idle bypass (Secondary) set to open at 14 psi with a #140 pil. (We will try to put inn a smaller pill, or shimming it to open a little later as it leans out a little too much goin of the throttle from WOT to off)

All this done stationally, the Altered has not been on the track, so we need to se what the respons is under load.

Hope this made any sence? Bruce ?

Thanks for the input guys

4

Spud Miller's Cave / Re: Spool size on a Crower IR injection.

« on: May 26, 2016, 12:28:22 PM »

Oh Bruce, and you asked if the BV is an Alky BV?
That was my intial question, how do I see that?
Hilborn BV's are the same for Petrol, Alky and Nitro, just different spools.
Does not this apply for the Crower BV's?

And as Alan wrote, these units was made for 396-427-454 cid BBC. Not for a 580 cid.
Have checked each cylinder with for leakdown,  and Spark is also OK,  so next up is that we will check the vacume in each stack with a Uni-syn and go from there..

5

Spud Miller's Cave / Re: Spool size on a Crower IR injection.

« on: May 26, 2016, 12:17:58 PM »

Bruce

We would have flow tested the hole thing if we have had time, as it need to be sent to a good friend in Sweden. Right now we had hoped to get it running for an upcoming event. The pump is brand new, and we tested it to be sure. But the system pressure indicates that it makes more than enough fuel. The Crower injection has never been tested over here, bought from a guy in the US. It came with 6 X 38A nozzles and 2x 37A nozzles, correct me if I'm wrong, should indicate that it had been running on Alky.
By lean? It does not run propperly on all cylinders, even with the .50 pill @ 4psi in the main byfass, it still would not run good. No extensive smell or sputter. With almost 50% leakdown it should have really fat.
Regarding Idle or secondary bypass, some are not using them. I know that in Nitro appication it was normally not used in older high pressure systems. Again, correct me if I'm all wrong, but what I have experienced, is that it the Idle bypass is more important on smaller engines that could not handle/burn that much fuel. It is mandatory on my small 290 cid, both on launch and going off from WOT at the 1320 mark. We will consider the secondary on this 580 cid when and if it gets enough fuel.
We are gone test some ideas this weekend and I will get back with a report or some more questions

Thanks Paul, could be really interesting to get in contact with Andrew

6

Spud Miller's Cave / Re: Spool size on a Crower IR injection.

« on: May 26, 2016, 12:01:17 AM »

Hi Paul Thanks for the info.
I have tried to search for Andrewb, but only this thread came up. Please PM his contact info if you have it.
The two new block are gone be filled with Moroso Block-rock

/Kjell

7

Spud Miller's Cave / Re: Spool size on a Crower IR injection.

« on: May 25, 2016, 03:24:31 PM »

Yep Alan, nine cracks is record in my book at least It might be more, but I have stopped counting;) The cause was more than one fault. After breaking the rear-end, 8 3/4 Chrysler, we really needed a good run the same weekend, so overheated the poor old flattie, and smart me had experimented, filling the block with expoxy witch should not expand, but it did!! So two new blocks are in the works, as all internal parts survived

Are are correct Alan, and you pointed out the fact that this Crower injector was never made for a displacement of 580 cid. Also modern high flow racing heads and cams also is an factor. With 2.9" butterflies opening, this one needs alot of fuel

/Kjell

8

Spud Miller's Cave / Re: Spool size on a Crower IR injection.

« on: May 25, 2016, 10:19:57 AM »

Hi Alan, yes new cars popping up, and some cars gets some upgrades.  Yes the shows are really good, actually we are invited to one of the best tracks. Hope to make it there with the Flathead dragster, waiting to get it machined. ;/ After last year, read record short, the block cracked in nine places I don't know if the spool is the same for the stack and blower injector.

Bruce.
The Crower spool has a larger diameter and a narrower slot then Hilborn with a .400" slot. But according to my calculations, they should have approx the same arial. The problem is that the engine don't get enough fuel, even opening the BV for more leakdown will not help. A .50 pill@4psi on the main byfass help some, but still to lean. The 580 cid has eight X36 Enderle nozzles and we use a Enderle 81A-1 fuel pump cam mounted. The system pressure at idle is approx. 20 psi witch i think is way to much, and thinking that the spool is the restrictor. As a note, we don't have an Idle bypass.

The owner has made some spool blanks this week, so we will try to make a new spool with a little wider slot and maybe a little more aggressiv ramp. The butterflies are 2.9 " in diameter, so we need a lot of fuel when they open up.

If we knew the excact spool data, it would have been a little easier to tune it, but I do belive we will get it running. Hope

Kjell

9

Spud Miller's Cave / Spool size on a Crower IR injection.

« on: May 17, 2016, 12:03:28 PM »

Hi As vintage  dragracing is growing here in Norway, new Engines are built.
We are currently working with a Crower IR set-up for a BBC, 580 cid.on Alky.
Does anybody know the width / Sizes on the spool in the Crower Barrel valve?

Best regards
Kjell

10

Roo Man's Room / Re: 2.75 x 19 Tires

« on: October 25, 2015, 02:09:26 AM »

As said, contact Jon Hansen. 3.00 X19 Avon speedmasters could be found. You can also find 2.75 x19 ribbed, but probably lower speed ratings. http://www.feked.com/budget-19-motorcycle-tyre-275-19-ribbed-front.html

/K

11

Roo Man's Room / Re: Tires on 18" American Racing 12 spokes

« on: October 06, 2015, 01:38:58 PM »

Thanks Jon.

I will pass on the information

Thanks again for the service

//K

12

Roo Man's Room / Re: Tires on 18" American Racing 12 spokes

« on: October 06, 2015, 08:12:53 AM »

Thanks Jon

No these are not for my dragster;) Someone over here is restoring an old Altered. It came with the 12-spokes, but the owner could not fit a motorcycle tire. Just wanted to know if have a suggestion.

Best regards
Kjell

13

Roo Man's Room / Tires on 18" American Racing 12 spokes

« on: October 05, 2015, 01:47:08 PM »

Hello

What Brand and size tires do you recoment for 18 " American Racing 12-spokes?

BR
Kjell

14

Front Engine Dragsters / Re: Why a FED or Nostalgia racing

« on: August 24, 2015, 01:18:21 PM »

This;)


https://www.google.no/search?hl=no&site=imghp&tbm=isch&source=hp&biw=1422&bih=687&q=godis+dragster&oq=godis+dragster&gs_l=img.3..0i8i30l2.1673.9747.0.10302.16.15.1.0.0.0.151.1180.14j1.15.0....0...1ac.1.64.img..1.15.1101.4AeBWH9LvBk#imgdii=9bBQUuf4cXUybM%3A%3B9bBQUuf4cXUybM%3A%3BegdIHtRXW1e8GM%3A&imgrc=9bBQUuf4cXUybM%3A

Swedish candy;)

15

Front Engine Dragsters / Re: Best type of Gasket/formagasket/Silicone/liquid gasket

« on: September 21, 2014, 02:55:52 AM »

Thanks guys:) Then I will try the Permatex Ultra Grey:)


/K