Thread Tools
Old May 12, 2011, 12:30 AM
cannondale1974 is offline
Find More Posts by cannondale1974
Registered User
cannondale1974's Avatar
Discussion

What size tuned pipe for a .61?


Looks like Macs gives me a couple choices, an 8.5cc for 45-60 size motors and a 10cc for 60-75 motors. I'll probably end up with an OS .61 which size tuned pipe would be the best or does it really matter?

Here's the chart from Macs website. http://www.macspro.com/tunedpipes.asp

Thanks guys.
Sign up now
to remove ads between posts
Old May 12, 2011, 06:07 AM
Lifer is offline
Find More Posts by Lifer
Registered User
1 cc equals .061 cubic inches. You have a 10 cc engine so use the 10 cc pipe. I have used Macs products for years and have had zero quality issues.
Old May 12, 2011, 11:49 PM
downunder is offline
Find More Posts by downunder
Registered User
downunder's Avatar
The sizes listed are simply the engine size in both metric (cc) and Imperial (cub inch). Personally I'd just go for the stock #1060 Quiet pipe but remember you have to also get an exhaust header as well.
Old May 13, 2011, 12:01 AM
cannondale1974 is offline
Find More Posts by cannondale1974
Registered User
cannondale1974's Avatar
Thanks guys, I've used tuned pipes for years and currently have an OS .32 on a tuned pipe. My local hobby shop has a Macs pipe on the shelf for an 8.5cc so it's a little confusing since their website says both the 8.6 and 10cc will work on a .60 I may give them a call and get their input as well.

Thanks.

ps: I don't want a quiet pipe, I want to hear this thing.


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Sold Macs Tuned Pipe & Header Set K&B .61 NIP $65.00 FREE SHIPPING stevster Aircraft - Fuel - Engines and Accessories (FS/W) 1 May 11, 2011 12:52 PM
Sold OS FX Max 61 with tuned pipe elcid Aircraft - Fuel - Engines and Accessories (FS/W) 1 Apr 07, 2011 05:05 PM
Sold NIB Mac's Tuned Pipe Kit for YS 91 to 120 FS, Used Pipe for 2-Stroke .61 dbarrym Aircraft - Fuel - Engines and Accessories (FS/W) 2 May 04, 2010 02:17 AM