[Spridgets] Weber Conversion

[Ron Soave]

To be clear,, I use both. My street Bugeye and street Midget (bone stock) use SUs at the moment. My race car uses both as things dictate. The throttle shafts wear quickly on the SUs under race conditions, and they are more susceptible to fuel frothing in the float bowls, which is a pain. My last dyno runs were 3 weeks ago, and I eeked out 3 more hp with the weber. Last year, slightly HIGHER compression ratio, I got 2 more with the SUs. They are both great carbs when set up right. My weber was bought from the late great Skip at Shadetree motors in 1997. It is used pretty severely and is as new. You can’t kill ‘em. 

28 and 30 mm chokes — I use 36 mm chokes on street, 40mm on race. Brake specific fuel consumption showed less than those numbers clamped performance. Your results may vary, and that’s the fun of it. I LOVE the Weber sound (sometimes), and have a set of triples on the TR6 I am getting around to restoring. 

Ron Soave

> On Apr 26, 2018, at 5:44 AM, Mark J Bradakis via Spridgets <spridgets at autox.team.net> wrote:
> 
>> On 04/25/2018 06:51 AM, John Farley via Spridgets wrote:
>> Hi folks.  I am toying with the idea of going to a Weber carb in place of the
>> HS 2s in my Bugeye.  The engine is a pretty much stock 1275 (1302).  I am thinking about a 40 DCOE or 45 DCOE?  Any words of wisdom from the group relative to the type, tuning tips, etc.?
>> Thanks,
>> John F.
> 
> A lot of people swap out their old, dirty, worn out SUs for a brand new shiny Weber.  And they see major improvement in performance.  If they swapped out a dirty, old worn out Weber for brand new shiny SUs  they would probably see a major improvement in performance as well.
> 
> Properly maintained and adjusted SUs work quite well.  But if you want to spend the money for the wow factor, stick with a 40 DCOE. 45 is too big, needs to be really choked down for a 1275.  A 40 with 28 - 30 mm chokes will work with a standard exhaust.  What you stuff in has to be matched with what you let out.  A nice LCB header will complement the increased breathability of the Weber.
> 
> Too bad I didn't keep notes, back 10, 12 years ago when I was working at Bailey's we had a customer with a 1275 Bugeye who was very happy with the configuration of the 40 DCOE I set up for him. At 4200 hundred feet above sea level the optimal jetting will be a bit different than at sea level.  Still have a little plastic tackle box out in the garage that has maybe $1000 - $1500 of precisely machined brass bits in it.
> 
> mjb.
> 
> ------------------------
> 
> spridgets at autox.team.net
> 
> Donate: http://www.team.net/donate.html
> Suggested annual donation: $12.75
> 
> Archive: http://www.team.net/pipermail/spridgets
> 
> Unsubscribe/Manage: http://autox.team.net/mailman/options/spridgets/soavero@yahoo.com