Hi There,
I have never used Webbers before but here go's.
1776 with 10:1 comp 130 cam. They are 44IDF's
Question is what air, idles and mains should be in the ball park to get this going?
Just going to have a look at the size of the vents now
Thanks
Frosty
Doug Sweetman ·
Can't help with the jets bus, but I hope you have a decent valve train and some nice heads to support that 130 you are running. Sounds like an interesting motor.
There are a bunch of guys on here that will give you some ideas about the jets.
OZ Towdster ·
It's gunna have a hole lot of top end
Sides ·
What's in 'em at the moment Frosty ???
Vents are the most exxy to change, so usually base everything off of them as a starting point...
Craig Torrens ·
F11's with 140mains, 175 airs, 55idles with 36vents
FROSTY ·
It has 36 vents
60 idle
Air correction 180
Emulsion f11
Mains 140
Will the 36 vents change the numbers by much? They need a good clean too.
Bizarre ·
Vents will change the mains
Vents x 4,2 = mains
The bigger the vent the higher the rev range for power
Craig's numbers are good
Stanley ·
Weren't they off a 1915 frosty
1916baja ·
Are you having trouble getting it to run??
FROSTY ·
Started it this arvo and it did a little coughing and farting, just checking cause I only have the 1776. They are great Mick just doing a little checking.
Bizarre ·
Have you synced the carbs and adjusted the mixture screws?
hellbugged ·
What did you run before frosty and what you using this engine in?
FROSTY ·
It's my 1776 in the drag car, I was running 40dells. It was the first start up yesterday and it didn't want to idle or rev. Could also be the distributor it hasn't run for a long time. Timing is spot on fuel is all ok. I'll have another go today and post the progress.
Craig Torrens ·
60 idles are too big.
vassy66T1 ·
You dropped Dells for Webers 🙅
matberry ·
Whats the problem?
FROSTY ·
Ok with a lot of dicking round, it idles but that's it! as I open the butterflies about1/8 of the way it dies straight away. I have adjusted in and out the accelerator pump volume and got it to start increasing in revs but that's it. It will not run at all with the butterflies open.
The fuel pressure is at 3psi
I have also swapped out the coil distributor for others. I have the shits now and feel like setting it on fire and pushing the heap of shit out on the street!!!!
The dells were just a bit small too Marcus, ( I got rid of 13sec dells and got 14sec Webers go figure)
Sides ·
Heh heh... Happy to my old Webers back when you truly have thei shits with 'em Frosty !!!
😂
ian.mezz ·
dirty fuel, jst pop the four screws out of the accelerator fuel pump on side and Look for muck.
FROSTY ·
Hey Ian, I have had them totally apart and cleaned them, new fuel and all fuel lines. There is a nice stream out of the pump jet too.
If I start it with the throttle fully open should it run?
And Dave these have been very well looked after too, no your not going to get them back.
matberry ·
All mixture screws responding properly? What idle speed and when exactly does it die if you slowly open the throttles, ie how far in mm from the idle stop screw?
ian.mezz ·
whats the fuel smeell like ???
FROSTY ·
It's about 7-8mm from the stop that it dies. And the fuel smells a bit unburnt from the idle.
I'll pick up some new plugs and leads tomorrow for round 3.
matberry ·
That's mains not working
ian.mezz ·
buy a can of carby clean and straw and spray in jets and jet holes in carby to make sure not block, you could pop linkages off and try reving one carby at a time . you also may of adjust acc pump lever wrong as it maybe not getting a full stroke/pump
FROSTY ·
Thanks matt ,Ian ,
They are off and apart again, clean for the 2nd time coming up.
matberry ·
Something not assembled right?
hellbugged ·
all four mains blocked 🙅 ..........will be something more than a clean Frosty
dangerous ·
FROSTY wrote:( I got rid of 13sec dells and got 14sec Webers go figure)
😂
When they are apart check the float/fuel level is correct.
Also make sure that the venturi and aux vent is not in backward or upside down,
possibly blocking off the main jet passage.
I have seen a venturi upsidedown in another brand of carb
and it did as you explain.
It was not blocking the passage,
but was not giving enough signal for the mains to work effectively.
Sides ·
Assume you cleaned and checked the jet stacks too Frosty ???
I remember Mick used to run 'em without air cleaners, and have seen jetstacks before with crud and even small rocks down the emulsion tubes, which messed up the signal to the main pretty severely...
hellbugged ·
Upside down auxiliary vents
x2
matberry ·
I've seen upside down sec vents/discharge nozzles, but all 4....🙄
hellbugged ·
Do they protrude out into the stacks on 44's?
They don't on dells so that's why I'm wondering if frosty might have fallen for this matty... Just a hunch
It would certainly position them down into the main vent where they wouldn't get a vacumn signal as well as the fuel channel being inclined yeah?
1916baja ·
They were running when they came off my car, I did swap the vents back to the 36's, and the mains back to the 140's but the aux vents won't locate all the way down if they are up side down... I did have the venturis out but I'm pretty confident they all went back in the same as they came out... By all means frosty double check it though! I could have cocked it up! Feel free to call me and give me a serve if you find this is the problem 😂
FROSTY ·
Well who would have thought.... All four upside down.... On the up side, I have these apart a couple of times and now I know they are clean.
Thanks for your thoughts everyone, that's one more thing ticked off the list.
Sides ·
Heh - great you've got it sorted Frosty !!!
Dying to know tho... was it you or Mick ???
❓
Craig Torrens ·
"upside down Miss Jane" 😂
1916baja ·
Sides wrote:Heh - great you've got it sorted Frosty !!!
Dying to know tho... was it you or Mick ???
❓
We'll never know Dave... We'll never know...🥷
hellbugged ·
So done that "blocky" yet frosty?
FROSTY ·
No blockies yet, have to bleed the brakes and do some adjustments on the gear change.
hellbugged ·
But it's fired and revving ?
ian.mezz ·
yep that would make both play up. that was the odd thing both.
should of got rose on the job 😂
.
FROSTY ·
At least they were all the wrong way, Dave told me about a time he had one round the wrong way and took a while to find the problem.
FROSTY ·
Thanks fro the call today Daimo, it's revving and loud! I mean very very loud!!!!
matberry ·
Good stuff 👍
FROSTY ·
Hi there, if anyone has some Idf jets they want to sell and are going to the dyno day sat let me know, I'm after 55 idles, 175 airs and 135 mains.
Thanks
Jason 0418356263
matberry ·
Plenty in stock (need to check specifics but should be no prob)
1916baja ·
Are you bringing the bug up frosty?
FROSTY ·
Hi Mick, No wont be bringing the Bug if was a month away it would be on there.
Hey Matt, if you have them bring them along and I'll have some cash for you.
Thanks
Jason
Craig Torrens ·
you will find that once you go down from the 60 idles to the 55's the 140 mains will be fine 👍
FROSTY ·
Thanks Craig I was thinking that but will have a bit of a play round too.
Thanks again everyone
Frosty