One other thing that’s good about an open spacer on a dual plane is it helps even out distribution making idle tuning and mixture much easier. It’ll help mid range as well. Just a 1/2 open spacer will usually do the trick if hood clearance is an issue.
What would happen if you add carb spacers on top of a Weiand dual quad tunnel ram on a large displacement engine, like 500ci, on a jet boat? Which style would likely be better? The open 2”, or the 4 hole? I need to get more height above the sides of the boat to raise the carbs, and insulate for heat, but don’t want to kill the performance! Just raise the carbs up, AND insulate for heat. Thank you!!!!! I think I’m about half way through your videos- because …. I LOVE YOUR KNOWLEDGE AND INFORMATION VIDEOS!!!!!
Love your videos you are a goldmine of knowledge i can watch listen to you all day and night, how to instructural books on kindle??? Thank you for taking the time to show a guy like me, dont let anyone touch my cars, allways keep my classic chevys all orig but know i got the swinging brass ones to do my own performance stuff. Hats off to you sir
I'm not sure what your asking but a 4 barrel holley takes a 4 hole spacer. You have a total of 8 holes in the spacer but you only count the 4 large holes. Hope this helps
@@holleycarbshowtosadvice40y90 Sorry I was referring to the bolt holes, to assemble it, which I don't know because some have more holes and the other doesn't, I didn't mean the 4 barrel, But to the spacer that has 2 holes per tip, and the other one that only has 1 hole per tip, what's the difference? Does it match?
No that won't help but if you can describe when you feel the flat spot, like do you feel it when your driving under light or hard acceleration and what size carburetor and what brand. Let me know and I'll try to help.
Great video, I have a question about the transition between the carburetor the intake and the spacer. If there are not a smooth transition can there be air loss velocity? Could that impact performance? I know that my spacers have different diameters just a little bit between the intake and the spacer. What do you suggest about that grinding them out so they match smoothness?
Max for best performance absolutey! I use to spend a lot of time matching and blending my intake and spacer also when you use a spacer it moves the carburetor up above the manifold further and creates plenum area and this creates a smother transition from the carb to the manifold especially at high rpms., so that is time well spent.
If you was to have a carb adapter like that one in the right hand side couldnt you buy another one just like it and shave those lips off so in turn you would get a bigger spacer you would have to change the studs but im thinking about doing this to a 2.4l Napz carburetored motor its a 1985 Nissan 720 timing is advanced to 11° needs bigger jets im running a 38/38 weber outlaw carburetor i have a 260s mild grind cam that isnt installed yet Thanks have a good day!
Those are wood spacers ,they are holley dominator spacers they have a different bolt pattern from a 4150 and 4160 carb unless they have the dual bolt pattern throttle plates , if you stack spacers put gaskets in between and on top and bottom. These spacers can be DIY if your good at wood working and wood is an excellent insulator.
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One other thing that’s good about an open spacer on a dual plane is it helps even out distribution making idle tuning and mixture much easier. It’ll help mid range as well. Just a 1/2 open spacer will usually do the trick if hood clearance is an issue.
Thanks for watching.
Told me what I wanted to know without driving me crazy for 1/2 an hour, thank you sir 👍
Your welcome.
Old engineer used to say, 'we aren't building the Taj Mahal, guys'
I think he’s got a point, I’m less is more with cam carb etc on street engines, does take self discipline I barely possess 😉
@@donaldhill2775 Old engineer was retired Army General, no BS. Just straight shooting.
@@josephtravers777 world 🌍 appears to be powered by BS these days 👍
Insulation from heat soak is all im after thank you
Phenolic spacer or wood , both are good.
What would happen if you add carb spacers on top of a Weiand dual quad tunnel ram on a large displacement engine, like 500ci, on a jet boat? Which style would likely be better? The open 2”, or the 4 hole?
I need to get more height above the sides of the boat to raise the carbs, and insulate for heat, but don’t want to kill the performance! Just raise the carbs up, AND insulate for heat. Thank you!!!!!
I think I’m about half way through your videos- because …. I LOVE YOUR KNOWLEDGE AND INFORMATION VIDEOS!!!!!
I would go with a 4 hole spacer if you only need height , open spacers add plenum volume. Hope this helps.
Love your videos you are a goldmine of knowledge i can watch listen to you all day and night, how to instructural books on kindle??? Thank you for taking the time to show a guy like me, dont let anyone touch my cars, allways keep my classic chevys all orig but know i got the swinging brass ones to do my own performance stuff. Hats off to you sir
Thank you
Good vid, this explained why my old charger 400 big block loved a 2 inch spacer on a dual plane
Absolutely, always try new things that what wins races.
@@holleycarbshowtosadvice40y90 Hey thanks again for covering the base plate switch. Are you a fan of the 830 carb I have 80509 ?
Which way do u put the last one the tampered holly up down right left ????????????????????????
I'm sorry I don't understand what your asking me.
4-hole spacers increase the signal to your carburetor in a big way. Try a 2'' tall 4-hole spacer once.
Thanks for watching Jeff.
Open spacers make more power on the top end w/ a jet change.
The 8-hole spacer fits with the holes it has only 4? Or they're not compatible
I'm not sure what your asking but a 4 barrel holley takes a 4 hole spacer. You have a total of 8 holes in the spacer but you only count the 4 large holes. Hope this helps
@@holleycarbshowtosadvice40y90 Sorry I was referring to the bolt holes, to assemble it, which I don't know because some have more holes and the other doesn't, I didn't mean the 4 barrel, But to the spacer that has 2 holes per tip, and the other one that only has 1 hole per tip, what's the difference? Does it match?
If i have a flat spot when i rev it , would i need one of these?
No that won't help but if you can describe when you feel the flat spot, like do you feel it when your driving under light or hard acceleration and what size carburetor and what brand. Let me know and I'll try to help.
Great video, I have a question about the transition between the carburetor the intake and the spacer. If there are not a smooth transition can there be air loss velocity? Could that impact performance? I know that my spacers have different diameters just a little bit between the intake and the spacer. What do you suggest about that grinding them out so they match smoothness?
Max for best performance absolutey! I use to spend a lot of time matching and blending my intake and spacer also when you use a spacer it moves the carburetor up above the manifold further and creates plenum area and this creates a smother transition from the carb to the manifold especially at high rpms., so that is time well spent.
@@holleycarbshowtosadvice40y90 Awesome good to know thank you
Thank you sir for sharing your knowledge.
You are welcome.
I use wood TBI\intake manifold spacer. 1 inch HDF and formica. diy
That works great to prevent heat transfere. Smart choice.
Putting a Spacer on a Air gap Intake can help or harm?
A one inch open spacer can give you some top end on a performer, I'm not sure on a air gap. I've never tried it.
How about a the split duel plane spacer?
Not sure what your asking me
If you was to have a carb adapter like that one in the right hand side couldnt you buy another one just like it and shave those lips off so in turn you would get a bigger spacer you would have to change the studs but im thinking about doing this to a 2.4l Napz carburetored motor its a 1985 Nissan 720 timing is advanced to 11° needs bigger jets im running a 38/38 weber outlaw carburetor i have a 260s mild grind cam that isnt installed yet Thanks have a good day!
Im saying to stack the 2 spacers adapters together but have the top one shaved to the carb
Those are wood spacers ,they are holley dominator spacers they have a different bolt pattern from a 4150 and 4160 carb unless they have the dual bolt pattern throttle plates , if you stack spacers put gaskets in between and on top and bottom. These spacers can be DIY if your good at wood working and wood is an excellent insulator.
Would a simple open spacer make a edelbrock carb run good on a stock gm 4 barrel intake? Thanks
Usually it helps , has a lot to do with your combination .
No , run a 4 hole , throw the open spacer in the garbage
Can you do some videos on quadrajet carburetors?
Yes I will kurt .
Should I use a spacer on my 406 with a victor jr
Darwin with out having all your engine information I can't say for sure but generally you will pick up some power with a open 1 inch spacer.
What type of wood?
I've got one thats made from marine plywood.
Good stuff
Thank you
Thanks dad 🍻
Thanks for watching , remember to email me,got some information about your lean condition, later.
So wood is the way to go
Phenolic material and wood are both good insulators and make good carb spacers.