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| SU carb sizes?? & air filter replacement https://www.ausmini.com/forums/viewtopic.php?f=2&t=27351 |
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| Author: | >Rude< [ Sun Jan 28, 2007 9:41 pm ] |
| Post subject: | SU carb sizes?? & air filter replacement |
Hi all, I have been looking at pictures of fellow ausmini member's engines n it seems as if the su's on some of them just look tiny? (might just be my eyes deceiving me  ) i dont know what size mine are and would like to know how you can check the size of them?? i think they may be around 1 3/4"?? any help would be much appreciated.
cheers >Rude< 
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| Author: | sports850 [ Sun Jan 28, 2007 9:49 pm ] |
| Post subject: | |
Couple of easy ways to check , 1 1/4 had two stud holes (on the manifold side)vertically opposed , 1 1/2 had 2 stud holes diagonally opposed and 1 3/4 had 4 stud holes in a square pattern . The other way is to pop your air cleaner off and measure the throat . |
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| Author: | poeee [ Sun Jan 28, 2007 9:51 pm ] |
| Post subject: | |
They look like HS4's to me (1.5"). |
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| Author: | MRClubby1098 [ Sun Jan 28, 2007 10:00 pm ] |
| Post subject: | |
Yep look like HS4 to me aswell |
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| Author: | >Rude< [ Sun Jan 28, 2007 10:14 pm ] |
| Post subject: | |
sports850 wrote: 1 1/2 had 2 stud holes diagonally opposed
sounds like that one to me, and if others can tell jus by lookin at them, cant argue wit that  thanks
cheers >Rude< |
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| Author: | >Rude< [ Sun Jan 28, 2007 10:16 pm ] |
| Post subject: | |
so thats wat a HS4 is....  cant keep up wit the technical names lol
I'm also looking to get some K&N air filters to replace the ones in the pic above (look clean here but its an old pic) they are getting a lil grubby now and would rather a good quality filter like K&N, anyone have k&n filters that are like this??? cheers >Rude< |
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| Author: | LS1380 [ Mon Jan 29, 2007 7:36 am ] |
| Post subject: | |
K&N Filters on twin 1/34 look like this...... 
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| Author: | poeee [ Mon Jan 29, 2007 9:25 am ] |
| Post subject: | |
HS4 is the model. HS is the style (with the fuel bowl on the side) and the 4 is the size (not sure why it's "4", someone may know though). |
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| Author: | sports850 [ Mon Jan 29, 2007 10:24 am ] |
| Post subject: | |
The 4 is 4 X 1/8" to make 1/2" , SU made varius sizes from 1 1/8" (HS1) up to 2" (HS8 I think) that I know of , anyone know of bigger ? The number was just their way of saying the size without reverting to decimals or longer codes . |
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| Author: | >Rude< [ Mon Jan 29, 2007 1:03 pm ] |
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LS1380 wrote: K&N Filters on twin 1/34 look like this......
 Prettyful!!!!!!! so how much did those cost approx??? sure have me convinced, airfilters wont hit the firewall with that shape either...did you have to modify anything??
cheers >Rude< |
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| Author: | LS1380 [ Mon Jan 29, 2007 6:38 pm ] |
| Post subject: | |
Not a cheap exercise-but I'm a sucker when it comes to twin SU's.I really like the look of them
First of all,I swapped a weber set-up for the twin carbies(that saved heaps) Filters cost $128.00 each. Inlet manifold(from Maniflow UK) $295.00. Plenty of clearance on the firewall. |
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