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FAQ's & Technical Articles => Techincal Section => General 2 Stroke => Topic started by: Steve on May 31, 2015, 02:48:45 AM

Title: Do I need a reed spacer?
Post by: Steve on May 31, 2015, 02:48:45 AM

Would a reed spacer help? If so, how thick spacer & what reeds to run??

Title: Do I need a reed spacer?
Post by: Jerry Hall on May 31, 2015, 03:35:42 AM

Quote from: Steve;54844

Would a reed spacer help? If so, how thick spacer & what reeds to run??

What engine are you working on?

What is done to the engine?

What pipe are you running?


Will a reed spacer help?.........
Help the engine produce more power?

Help the carb fit better?

Help remove some cash from your wallet?

Title: Do I need a reed spacer?
Post by: Steve on May 31, 2015, 03:42:42 AM

I bought it from a guy in Bakersfield who used it as a drag bike. It has a big bore kit.(almost 400 he said) high compression head, trx 5 pipe with a silencer. That's all I know unless take the motor apart.

Title: Do I need a reed spacer?
Post by: Jerry Hall on June 01, 2015, 03:09:04 AM

Quote from: Steve;54847

I bought it from a guy in Bakersfield who used it as a drag bike. It has a big bore kit.(almost 400 he said) high compression head, trx 5 pipe with a silencer. That's all I know unless take the motor apart.

Ok now we need answers to the last 3 questions:

Will a reed spacer help?.........
Help the engine produce more power?

Help the carb fit better?

Help remove some cash from your wallet?

Title: Do I need a reed spacer?
Post by: Steve on June 01, 2015, 03:20:44 AM

Make the engine have more power & top end.

Title: Do I need a reed spacer?
Post by: Jerry Hall on June 01, 2015, 03:25:24 AM

Quote from: Steve;54889

Make the engine have more power & top end.

Does it have a conventional reed block or a V force or ESR twin V type reed?

Title: Do I need a reed spacer?
Post by: Steve on June 01, 2015, 03:27:59 AM

Just a conventional reed box with no spacer.

Title: Do I need a reed spacer?
Post by: Jerry Hall on June 01, 2015, 03:33:58 AM

A reed spacer will probably help the power a little.  The tip of the reed comes close enough on the big bore to the piston that the top petals of the reed cannot flow  well.

Title: Do I need a reed spacer?
Post by: Steve on June 01, 2015, 03:38:28 AM

Oh, ok.thax. The second bike I have has a 310 kit with a 3/4 spacer & boysen reeds. It's fast but can't beat the other one.

Title: Do I need a reed spacer?
Post by: Rupp250 on June 01, 2015, 11:36:45 AM

Who did you buy it from? Do you have a pic of the bike? Plenty of members here from the area. Someone will probably know the bike.

Title: Do I need a reed spacer?
Post by: Jerry Hall on June 02, 2015, 11:20:43 AM

Quote from: Steve;54894

Oh, ok.thax. The second bike I have has a 310 kit with a 3/4 spacer & boysen reeds. It's fast but can't beat the other one.

I do not think that putting a 3/4" reed spacer and Boysen reeds on your 400 is going to improve the power enough to smoke the 310 bike.  You have one or more components that are incompatible with the components that make up your 400 engine package.  The most common components that are miss-matched are the porting and exhaust system.