Gas pipe setup

[Bryan calabrese]

After 40 years of nitro and swearing I never will touch electric or gas I'm building my first gasser a zipp missile my question is on pipe length I an running a stock 26 pum with zippkits pipe what is a good starting length for this pipe engine combo the norm seems to be 13.5 but where are you measuring from and to is it the middle fattest part of pipe and where do you start from ...any helps is appreciated....

 

[FloridaScaleBoater]

From the exhaust flange on the outside of the cylinder, around the curve/bend of the header to the widest point of pipe.
I used a bent push rod with a wheel collar with a second adjustable rod to measure the length
13.5" works fine

 

[Mike Hughes]

Just to be clear. That is center line of the header and pipe. If you measure around the outside, you will be a little shorter. 13.5 is the number for those and several other pipes with the stock motor class.
Mike

 

[rhomodel]

Easy way to measure: lay a piece of thin rope along the centerline from exhaust flange to widest part of the pipe as Mike explained, and then measure the lenght of this rope with a ruler.

 

[Ray Sametz]

 

[Mike Hughes]

Perfect Ray. Cant screw it up with that pic..
Mike

 

[the german]

Here is the pic of the Zippkits website.
I hope this helps !

Alex

 

[Joe Petro]

We like 14 inches in the Thunderboats. If using our dropped header, no need to measure. Put the pipe in until it hits the bend in the header, and pull it out 1/2 inch. Done. Start throwing props at it.

 

[Davidkrienke]

Man that makes me mad to see him talking about him using the stock pum26 after he already sold it to me . He was talking about him ordering from Zippkits and it was taking a long time to get there blaming post office on why I hadn't received my engine yet. Even telling me to get that pipe when I asked him about a header for it. ughhhhh.

 

[Sport45]

So what pipes are you guys using ( Im needing one for a modded 26 Zenhoa ) the one I have is not performing as it should
Thanks

 

[Toni Lightbourne]

My Zipp kits works well with my 260 zenoah.
https://zippkits.com/index.php?main_page=product_info&cPath=7&products_id=496Best price for performance in my opinion.

 

[David Bryant]

this is a nice tuned pipe kit, designed to customize to the users set-up:
https://www.ebay.com/itm/VXP-1-Head...p2349624.m46890.l6249&mkrid=711-127632-2357-0

 

[Davidkrienke]

Gizmo has a nice looking light pipe. It is not the cheapest but looks good quality. has anyone tried one of there new pipes?

 

[Toni Lightbourne]

Their pipes are okay. Hold alot of heat for some reason. Cut out the internal stinger and they will probably perform better.

Alan Terry ATR has a good 7/8 slip on hotpipe that works well. He makes them custom, so you will have plenty of choices when making them.

 

[Sport45]

Alan Terry ATR has a good 7/8 slip on hotpipe , has he got a website or is he on FB

 

[rhomodel]

What do you have now and what do you want: O-rin or clamp?

 

[Toni Lightbourne]

He's on Facebook.

 

[Sport45]

What do you have now and what do you want: O-rin or clamp?

unsure what it is got it off a mate who doesnt know much about boats . I would like a o-ring setup without the water nipples

 

[rhomodel]

With O ring you need water nipples for cooling, otherwise the O-rings burn-up. This is a bit of a sensitive system, though it works for most. I'd try a slip fit pipe: very little that can go wrong there and you only have to worry about the o rings at the exhaust flange.
There are many producers, what springs to my mind is the GZR new vision pipe system sold by Gizmo: new vision pipe kit
Or a hot pipe like system. Though that is not 100% slip on it is also a system without O ring sing the pipe.
https://www.gizmomotors.com/online-store/h-o-r-stainless-steel-hot-pipe-completehttps://quickdrawengines.com/Page_40.html

 

[AgafonovRoman]

Great thread for GAS users. Any tips of measuring pipe on BZM 27cc? Please let me know if there is a thread anywhere on IW. Thanks a lot.