Hi, just wondering what peoples thoughts on carby spacers. I am putting a holley 465 on my lx 253 and thinking about a 1" spacer . what would be the diff between a super sucker or plain square and 1" verse 2" spacer .fitting it on elderbrok performer mild cam etc.
carby spacers
Started by
_lh.355_
, Jun 23 2012 11:31 PM
19 replies to this topic
#2
_ljxu1torana_
_ljxu1torana_
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Posted 23 June 2012 - 11:45 PM
personally i dont think it is not going to make much difference,with a 465 holley and a 253.just my thoughts.thanks jason.Hi, just wondering what peoples thoughts on carby spacers. I am putting a holley 465 on my lx 253 and thinking about a 1" spacer . what would be the diff between a super sucker or plain square and 1" verse 2" spacer .fitting it on elderbrok performer mild cam etc.
#3
_lh.355_
_lh.355_
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Posted 24 June 2012 - 12:06 AM
think i might be trying to be sold some thing i really dont need .cheers
#4
_ljxu1torana_
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Posted 24 June 2012 - 01:05 AM
i think that you have answered your own question.thanks jason.think i might be trying to be sold some thing i really dont need .cheers
#5
_Yella Fella_
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Posted 24 June 2012 - 01:09 AM
It can have a profound difference with the venturi effect and fuel/air ratios hitting the cylinders. I'm pretty sure that's what the logic is based around. Don't understand it fully myself.
Edited by Yella Fella, 24 June 2012 - 01:11 AM.
#6
_Viper_
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Posted 24 June 2012 - 02:09 AM
As far as I'm aware carby spacers can make quite Abit of difference but best to play with different thickness's and have the combo Dyno tuned to match to find the ideal setup
#7
_LH8VD69_
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Posted 24 June 2012 - 02:29 AM
I won't speak from any here say but will tell you the one expeirience I had with a carby spacer.
I had just rebuilt my 308 in my VH Commy in line with a full resto and the engine was not only NOT making good power but didn't rev as free as it should considering the engine specs. I took it to several different places both in Kalgoorlie and then Perth WA with no luck.
I had pretty much resigned myself into having to just live with this engine when I came across an old guy at a tuning shop here in Perth that said he would take a look.
Well I picked the car up late in the arvo and boy was I happy. Sure the car needed some fine tuning but what actually 'fixed' it was a 1" carby spacer ! The engine pulled like a train and reved freely to 7200rpm.
What can I say but
I had just rebuilt my 308 in my VH Commy in line with a full resto and the engine was not only NOT making good power but didn't rev as free as it should considering the engine specs. I took it to several different places both in Kalgoorlie and then Perth WA with no luck.
I had pretty much resigned myself into having to just live with this engine when I came across an old guy at a tuning shop here in Perth that said he would take a look.
Well I picked the car up late in the arvo and boy was I happy. Sure the car needed some fine tuning but what actually 'fixed' it was a 1" carby spacer ! The engine pulled like a train and reved freely to 7200rpm.
What can I say but
#8
EunUCh
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Posted 24 June 2012 - 09:15 AM
Spacer will also help keep the carby cool if it is an insulator type spacer.
#9
_Yella Fella_
_Yella Fella_
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Posted 24 June 2012 - 09:30 AM
^ I tried to get one of them a few months ago. Sadly, they've stopped making them!!!!
#10
dattoman
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Posted 24 June 2012 - 02:13 PM
Phenoilc spacers are still around Pat
Check out Bocam Engineering
Handy for keeping alittle heat out of the bowls
Check out Bocam Engineering
Handy for keeping alittle heat out of the bowls
#11
_LS1 Hatch_
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#12
_lh.355_
_lh.355_
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Posted 24 June 2012 - 03:40 PM
well thanks fellas , that left it an open result. will give a 1" spacer a go . then the choise of a open spacer or super sucker ?
#13
_Bomber Watson_
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Posted 24 June 2012 - 03:56 PM
From what i have gathered it seems that carby spacers are kind like changing jets....
Sadly i cant tell you from here what primary jets your going to need in the carby, you will have to buy several to find the correct one, same deal with a carby spacer.
Cheers.
Sadly i cant tell you from here what primary jets your going to need in the carby, you will have to buy several to find the correct one, same deal with a carby spacer.
Cheers.
#14
ls2lxhatch
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Posted 24 June 2012 - 04:09 PM
Do you have enough bonnet clearance for a 1" spacer?
You need a dyno to see which spacer if any work for your engine.
You need a dyno to see which spacer if any work for your engine.
#15
wot179
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Posted 24 June 2012 - 04:14 PM
A carb spacer can increase your mph at the track,but not necessarily your ET.
Sometimes they work,sometimes they dont.
Borrow one to try if you can.
The best dyno is 1/4 mile long.
Sometimes they work,sometimes they dont.
Borrow one to try if you can.
The best dyno is 1/4 mile long.
#16
_Yella Fella_
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Posted 25 June 2012 - 12:10 AM
Thanks for that. That place did go broke, so that doesn't surprise me.
Notwithstanding that, my car seems to go better with the standard gasket? Don't know if there is a link.
Notwithstanding that, my car seems to go better with the standard gasket? Don't know if there is a link.
#17
basicgreen
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Posted 01 July 2012 - 12:49 PM
hi are the spacers any good 6 bangers
i was thinking that i have to fit a pcv valve port in and i might as well put it in a 2" spacer
any help would be good
do i need to put a pcv valve in will it run any better??
i was thinking that i have to fit a pcv valve port in and i might as well put it in a 2" spacer
any help would be good
do i need to put a pcv valve in will it run any better??
#18
_Bomber Watson_
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Posted 01 July 2012 - 12:51 PM
Same deal mate, results will only show on the dyno/1/4
Cheers.
Cheers.
#19
_lh.355_
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Posted 01 July 2012 - 06:32 PM
put the new holley 465 on plus 1" spacer, cant tell you if the spacer or carby has made a diff but it goes like sh#t now. way more responsive and pulls harder topend either way very happy .will get it on a dyno for a fine tune and peace of mind.
#20
_TorYoda_
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Posted 04 July 2012 - 10:40 PM
Personal experience with spacers tested back to back at the drag strip showed a 2 inch open spacer on a single plane Edelbrock Torker to increase MPH by 4mph. The spacer also required jetting 4 sizes richer at both ends of the carb.. Removing it without changing the jets back resulted in an excessively rich mixture. The 2 inch spacer with 4 individual holes required the same jetting as the open spacer and ran the same MPH, however the ET was one and a half tenths better due to slightly improved low to mid range response than the open spacer. The total gain at the track from this effort was 4mph and 6 tenths!
Spacer requirements are directly related to the manifold plenum volume and shape but it is not an exact science because carb sizes and cam durations affect what works best as well. Testing all the combinations in the real world is unfortunately the only way to find what works best for your particular combination. Jetting must be revised for each change in order to make accurate comparisons.
Spacer requirements are directly related to the manifold plenum volume and shape but it is not an exact science because carb sizes and cam durations affect what works best as well. Testing all the combinations in the real world is unfortunately the only way to find what works best for your particular combination. Jetting must be revised for each change in order to make accurate comparisons.
Edited by TorYoda, 04 July 2012 - 10:42 PM.
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