The POS is a goer once more..... But....

[Humpty]

Yeah it is set up to be referenced, but I'm wondering if there is a need for the venting..... I'll be fitting one of the check valves later today in the hope that will steady the vacuum signal....

Still trying to find some of those F11's..... Nobody has any here.... Might have to import them from the US....

Speaking of importing stuff..... That first Aeromotive FPR I bought back in January finally arrived yesterday!!!!

[miniman82]

WTF?!? Was it stuck in customs or something?

[Humpty]

No idea Mini..... It's pretty amazing though.... I only can trace it leaving the US.... After that it prolly came via Guatemala on a turtle!!!

[Humpty]

The jets have arrived, as have the F11 E Tubes.... Time to mix it up a little!

[Humpty]

Pissed off with the DCOE... Gonna give a 500 holley a go.... If this gives me any lip, I'll burn the bloody lot and get the efi on there god damn it!

Anybody have any suggestions on setting up a 500cfm Holley 2bl?.... Other than talking to AJ?

[56speedster]

I had the Holley from AJ and got sick of it and went EFI. Sell your DCOE, bite the bullet and step up to EFI. You won't regret it and you will no longer have to worry about a plugged jet, stumbles from idle, part throttle or full throttle, dying when you come to a stop, etc, etc, etc....

I've had the EFI on my car now for about 18 months and coundn't be happier.

[MarioVelotta]

LOL, he has the EFI. But it was for another project. It has to be killing you Humpty!

[Humpty]

Oh yes it is Mario.... I have efi for this car to, but I'm building that gear into another replacement body and the stroker that will replace this lot!.... That gear I got off you is destine for the bus.... Which finally gets its day in the shed real soon!

Too many bloody projects!!!!

[Humpty]

Just arrived today.....





Time to start fabricating.... Hopefully this weekend.

Still waiting for the Percys Adjust-a-jet bit, need to fabricate a suitable carb support bracket and I think I have a cool idea for the aircleaner issue....

[Humpty]

Ok.... So now I got my 500 Holley in bits.... Fitted the smallest PV I could find (3.5), the Adjust-a-jet is here now, and the boost referencing mods are about to happen, but still I have questions....



Can anyone tell me what all these ports (the large one at the top and the two smaller ones on the lower right) are for in the base plate are for?

[Humpty]

Got back in the shed this morning..... So started on the new intake for the Holley....

But first I needed to pull this....



Then I bolted this on in it's place....





Followed by this.....



And this...



Which needed some trimming.... And shortening...









Which got me to this....











Happy with that lot so it's off the TIG dude for a little fettle....

Then I started on the new breather/catchcan setup....

It's kinda cool and a little odd..... Just the way I like it!

[Humpty]

I just want to make this very clear to you all...... I know absolutely nothing about Holleys!.... Ask me about Dellortos and I can bore you to tears on those babys, but Holleys are a total unknown.....

Now for my questions.... Is there any reason why I can't use the stock vacuum port as the signal port for the Power Valve (PV) boost sensing mod?





I think I might be able to get in there and redirect the gallery into the PV chamber, but would this possibly have a disastrous effect on some other function within the carb?

As a side note for those that are better informed than I.... My carb is marked with a 4412-S model number.... Does that mean its suitable to be used on a blown engine, and this port I am contemplating using is in fact the OEM method for boost sensing?

[Humpty]

Boost referenced the 500cfm Holley today....

Needed to machine a slot where that black line is....



Used this....



And this...



To make this....





See that 'L' shaped gallery?



It lines up with the slot I cut in the carb body earlier...

Then I drilled a hole at the top most part of it....



Which lines up with the large hole that is cast in the side of the PV manifold...



Which was then tapped with 1/8 tapered tap....



So I could fit this....



Then I needed to drill, tap and seal these two galleries to reditrect the vacuum/boost signal....



Then I whacked it all back together....



Still need to fit the Adjust-a-jet and then we are done....

[Humpty]

Made this document up for those that might be interested in doing the same thing!

It's based on some info I found on the web, but tidied up a bit so it's little easier to read and understand....

[panel]

Nicely documented