View single post by JodyKerr
 Posted: 05-31-2011 09:18 am
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Joined: 05-15-2006
Location: Tempe, Arizona USA
Posts: 217
Here's the scoop on carburetors.

The Jensen Healey was fitted with DHLA40's with 32mm chokes. Lotus OEM Dellortos for the 907 are DHLA45E's with 35,  36,  or 38 mm chokes,  depending upon the model year and overall set-up.

So what does this mean? It means that they not only all work on the 907 motor they were all factory fitted carburetors.

So what's the difference. With each carb set up it's the choke size and jets. The 907 engine was built to spend most of it's time near the rev limiter, and not in the lower range. As you inrease the size of the choke the high RPM performance increases. The dowqnside to this is that standard driveability tends to wane. So there's a minor trade off here, and it totally depends on how the car is to be driven.

From what I understand the DHLA45E's with a 36mm choke are really fun on a JH, stock or modified.