Author Topic: Project: The '81 "Yoter"  (Read 26119 times)

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a1gemmel

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Re: Project: The '81 "Yoter"
« Reply #210 on: Jan 18, 2024, 03:37:46 PM »
Alright, my dyno session was today. I've made another thread for this since I feel like the 22R stroker information is more broadly relevant to folks thinking of building such an engine, made searchable without wading through my whole truck build thread.

https://board.marlincrawler.com/index.php?topic=105900

the TL;DR of the results here is:



This is an overlay of the best pull with my 37" tires (light colours) and the best pull with a set of 31x10.5R15 tires (dark colours).

As I drive the truck, where I drive it, as observed:
63.3whp@4053rpm, 103lb-ft@2290rpm
With correction factor of 23.2%:
78.0hp, 127lb-ft

Throwing on the 31" tires to see a closer-to-stock result:
74.3hp@4134rpm, 109lb-ft@3170rpm
With correction factor of 22.7%:
91.0hp, 134lb-ft

If there's any discussion of the results let's have it in the engine thread instead of here, so the information is all in one place.
1981 Pickup - 37s, 5.29s, L52, dual cases 4.7 rear, e-locker front, grizzly rear, 22R stroker
1986 4Runner - 35s, 5.29s, auto, front Detroit, rear trutrac, 4" lift

 
 
 
 
 

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