262 vs 308 carbs

dave11

Would the WA1 carbs from a 262 be the same as those used on a 308?

. Both are Twin H setups

Dave

53jetman

No   -   The bore  of the mount casting  on the 262 is a smaller bore.  The actual size escapes me just now,.

Glowplug

Another reason to bookmark my Hudson restoration page, use this link and select ... Fuel systems on left side links on front page to see and read specific differences- http://hudsonrestoration1948-54.com/index.html#RESTORATIONAIDS

50ClubCoupe

The 262 carb mounting flanges have 2 3/4"  center-to-center between the bolt holes whereas the 308 carbs are a full 3" center-to-center.  If you have some 262 carbs you can't use I may be interested in them. 

dave11

So then the diameter of the intake runners on a 262 twin H manifold are smaller than a 308 intake?

Or is it just the carb mounting studs are closer together to allow for the smaller carbs on a 262?

53jetman

The studs are closer together - the runners of the manafold are the same

Browniepetersen

It is all about CFM's.  The carbs on a 262 have a smaller opening at the mounting plate.  The 308 carbs are larger opening permitting more flow for combustion and increased power.

dave11

I'm wondering if a 262 Twin H intake became available, could it be adapted to use 308 carbs by reposition the car mounting studs to accept the 308 bolt hole centres?

Glowplug

Anything is possible the real answer is no. The 262 manifold is worth more as it is a rare find

dave11

What would a shrewd minded buyer expect to pay for a 262 Twin H setup  c/w carbs and linkage ??

Glowplug

$600.00 would be the bottom dollar usually more.

50ClubCoupe

Ken is right….the 262 manifold is hard to come by.  When I was searching for a twin h setup for my 262 a couple of months ago I was finding mostly parts and pieces and could not locate any complete setups.  I was seeing prices ranging from $300-$650 just for the manifold, roughly $100-$150 for linkage and rebuilt carbs were running $250/each. Fortunately I found a rebuilt 262 that included a full twin h setup so I didn't have to worry about scavenging all of the parts.  The 308 equipment was easier to find.

hudsonguy

For what it's worth, I've got a 308 Twin H manifold (from the 55-57's) on my '49 262 engine. I had been running re-jetted 968s carbs (from a 308) and had a hard time getting them leaned down enough for good running.

So, I rebuilt the 990s (262 specific) carbs I had, with the smaller mounting base, and re-worked the mounting holes in the base with a couple of simple cuts on the mill, that essentially 'egged out' the two existing holes. Bolts right up, seals well at the gasket, and more importantly now runs way better than the larger carbs ever did.