Cox Engines Forum
You are not logged in! Please login or register! Guests are limited to posting in the "General Questions (Guest Posting Allowed)" section only. Becoming a member is fast, easy and FREE!

Log in

I forgot my password


Display results as :

Rechercher Advanced Search

Cox Engine of The Month
Dave P.'s

"RC Tee Dee 049"

Speed Contest 2018
CEF Traveling Engine

Win This Engine!
The Traveling Prop

World of Aviation

cylinder question

Go down

cylinder question

Post  chevyiron420 on Wed May 13, 2015 6:23 pm

I was comparing a #3 to a #1 and I cant see any difference. The are both stepped with SPI, two transfers and no boost.
Whats the difference?
If it was your engine would you run the#3 or a slit exhaust with no SPI, two transfers with one boost per transfer?
Gold Member
Gold Member

Posts : 183
Join date : 2015-01-28
Age : 60
Location : Barney Georgia

View user profile

Back to top Go down

Re: cylinder question

Post  Admin on Wed May 13, 2015 6:49 pm

The #3 was stamped on many different cylinders so there really is no exact specs for a cylinder stamped with a #3. Probably came off a product engine like a series 290 or something. If it matches a #1, then it should be 2 bypass with SPI.



Posts : 4786
Join date : 2010-07-27
Location : Roseville, Minnesota

View user profile

Back to top Go down

Re: cylinder question

Post  Cribbs74 on Wed May 13, 2015 7:54 pm

I would run the number 3.

I have run a number 3 in place of a number 1 as they were identical as you have found out.

Many here will testify that a good fitting number 1 will perform as well or better than a #4(TD cylinder)


Trusted Seller
Posts : 9945
Join date : 2011-10-24
Age : 44
Location : Tuttle, OK

View user profile

Back to top Go down

Re: cylinder question

Post  Sponsored content

Sponsored content

Back to top Go down

Back to top

- Similar topics

Permissions in this forum:
You cannot reply to topics in this forum