It is 8.54 ~ 10.12 :1
24:1 or 32:1 the richer the longer the life i like 24:1 for my 1993 yz250
I have a 1988 Yamaha YZ250 and my manual states .028 is the setting that you should use.
Highest and lowest cylinders should not exceed a 10% difference
1988-1991 yz250 motors are completely interchangeable. Some parts like the cylinder head use the same casting from 1988-1996. Note: although interchangeable the cylinder ports and cylinder head combustion chamber shape differ form year to year. The optimum setup for a 1990 yz250 is a 1991 cylinder with a 1992 head.
The stock gear ratio for a 1988 Chevy K1500 4x4 typically ranged from 3.08 to 3.73, depending on the engine and transmission options. Most commonly, the 3.42 ratio was popular for many configurations. However, some models equipped for towing or off-road use might have come with a 3.73 ratio. Always check the specific vehicle's specifications for accurate details.
its either 355 or 373 there are tags on diff that give you numbers
They have Disc brakes both front and back stock they came with Nissin braking system, they use DOT4 brake fluid, if you be more specific with your question I could be able to answer better my email is protechav@yahoo.com
The stock rear end gear ratio for a 1988 Chevy G20 van typically ranges from 3.08 to 3.73, depending on the specific engine and transmission configuration. Commonly, the 3.42 ratio is often found in models equipped with a standard V8 engine. To determine the exact gear ratio for a particular van, it's best to check the vehicle's specifications or the axle code located on the axle housing or in the vehicle's documentation.
200 psi
100 lb or above
A 1988 exhaust may fit a 1989 YZ250, but compatibility can vary based on specific modifications and design changes between the two model years. It's best to check the mounting points and overall design of the exhaust systems to ensure a proper fit. Additionally, consulting a service manual or a knowledgeable mechanic can provide more definitive guidance.
The stock rocker arm ratio for a Gen I Chevy small block is 1.5:1. The marine engines have the same rocker ratio, but use different cams and have bottom ends built to handle sustained RPMs.