1938 WLDR

Intake Nipple Size

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Bruce The Goose
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1938 WLDR

#1

Post by Bruce The Goose » Tue Aug 13, 2019 12:25 am

Hi All,
Could anyone tell me if a 1938 WLDR has standard intake nipples and valves or the larger ones, or were the larger ones introduced in 1940?

Cheers
Bruce



kitabel
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Re: 1938 WLDR

#2

Post by kitabel » Tue Aug 13, 2019 12:40 am

There are 3 sizes, and AFAIK you should have the medium (1-5/16" ID, 2" nut), same as VL, UL and 1936-39 EL. The largest (1-9/16" ID, 2-1/8" nut) only fits 1940-52 WLDR, WR, EL, FL engines.

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Re: 1938 WLDR

#3

Post by Buddhahoodvatoloco » Tue Aug 13, 2019 1:34 am

Loving the definiteness of this reply, along with both barrels blasting pertinent Raw data. get em cowboy, love it.. :P :P :P :P ,
kitabel wrote:
Tue Aug 13, 2019 12:40 am
There are 3 sizes, and AFAIK you should have the medium (1-5/16" ID, 2" nut), same as VL, UL and 1936-39 EL. The largest (1-9/16" ID, 2-1/8" nut) only fits 1940-52 WLDR, WR, EL, FL engines.

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Re: 1938 WLDR

#4

Post by RUBONE » Tue Aug 13, 2019 2:08 am

Bruce,
It depends on whether your cylinders are original for a '38 WLDR. As Kitabel says, the originals were 1-5/16, the small size but the later '39 WLDR used the mid size (1-7/16) and the '40 went to 1-9/16. The larger barrels and associated aluminum heads were new in '40 and there were two types. The standard WLDR and the WLDR "Special) with inclined valves. There are a few factory cheater motors known out there though with 1-7/16 ports in '38 (those engines are also full ball bearing before the public could buy one!).
Here is a copy of the '40 competition parts catalog page on cylinders;
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Re: 1938 WLDR

#5

Post by kitabel » Tue Aug 13, 2019 4:21 am

There are explanations for this most disturbing behavior, but I'm afraid they're not socially acceptable.

Bruce The Goose
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Re: 1938 WLDR

#6

Post by Bruce The Goose » Tue Aug 13, 2019 5:52 am

Thanks for the info,

was reading some conflicting stuff, was planning on using the iron heads (2 bar) not the later Aluminium, so the standard inlets should be ok (with proper cams of course).



Chees
Bruce

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Re: 1938 WLDR

#7

Post by kitabel » Tue Aug 13, 2019 12:57 pm

I stand corrected: a 1938 with the original 120-36/361 castings should have 1-5/16" ID, but that's "small" not "medium".

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