Perry Carb Info

All about early Perry Carburetors

8-10-2023

We do not own Perry and only have some parts because of the engine companies we own used them in the past.
Link to original Perry instructions

Link to Perry parts in our Shop

These are the first small body Perry's with the spring needle. The came in 3 body sizes.
No identifying markings on the body

These were originally used on the McCoy Series 21, Conquest .15, and HB engines.
HB in Germany actually made all the Perry Carburetors for Perry until he sold the business in the 1980's

All dimensions are in inches and approximate as they were taken from samples.

Perry also made carburetors with gray or silver color plastic. None were ever made from aluminum.
(except some prototypes machined from bar)

All dimensions are in inches (approximate taken from samples)	Large Body	Medium Body	Small Body
Venturi bell outside diameter	.525	.450	.450
Mixture Disk diameter	.630	.570	.480
Width of plastic body	.925	.890	.780
Barrel diameter	.495	.400	.350

Any Perry that has a short nub where the needle screws in uses the needle with the spring.

All dimensions are in inches (approximate taken from samples)	Large Needle	medium needle	Small needle
Knurled Diameter	.330	.320	.240
Tip Body Diameter between thread and start of taper	.045	.055	.044
Overall Length	.950	.910	.845
Length from tip of needle to face of knurled knob	.690	.655	.590

On the large body the pump carb uses a larger thread that is the same as the O-ring sealed needle.

Note on small needle we have seen 2 different tapers Click here

The style below uses an O-ring seal on the needle. You can see the nub is longer so the O-ring has a place to seal.

These carburetors usually have "Perry" molding into into the body.