The World Famous Bull Sessions

Show Us What You Are You Building? => Marketplace => Topic started by: AHood on January 30, 2015, 07:10:17 pm

Title: leak down pressure test kits
Post by: AHood on January 30, 2015, 07:10:17 pm
how many people would be interested in a whole kit or components for a leak down pressure test kit of sorts.  some things it could include  carb boot pressure fitting adapter for 34-48mm size mikuni carb boots combined with 40-45mm size for mikuni. 
 basically fit both size boots in one unit.  threaded for pipe fitting to attach pressure regulator or use two for a twin and simply block one.  I have a prototype of this ill posts a pic of  ive been using it when i test engines and its a big help.  a twin cylinder would need two of these. 
also possibly an array of exhaust port block off plates(aluminum) and intake block off plates for engines without a mikuni boot on the intake. 

for the air source I use a small hand pump that is actually intended for brake pressure bleeding but works great.  at 5lbs of air you will know real quick if you have a leak or not.  if you have shop air compressor you need a real low pressure reg and gage to do this or you risk blowing the seals out. 

thoughts? interest? 

the mikuni boot adapter would be delrin.  the blocking plates would be aluminum. 
Title: Re: leak down pressure test kits
Post by: theSLEDwhisperer on January 30, 2015, 08:37:26 pm
I was just talking to a few guys about this. I would be interested and would like to see your prototype. What is your cost estimation per kit?
Title: Re: leak down pressure test kits
Post by: AHood on January 30, 2015, 09:03:00 pm
Not sure what the cost will be yet. It will depend on the interest and what pieces people want in a kit. The more interest the more pieces I can run and the lower I can keep the cost.
Title: Re: leak down pressure test kits
Post by: sledcrazyinCT on January 31, 2015, 02:55:56 am
this is a good tool to own look forward to more information
Title: Re: leak down pressure test kits
Post by: Earl on January 31, 2015, 02:59:29 am
+2
Title: Re: leak down pressure test kits
Post by: ddub on January 31, 2015, 03:10:04 am
I would like to see more info.
Title: Re: leak down pressure test kits
Post by: Ski-Zoom on February 01, 2015, 09:16:09 pm
Interested also.
Title: Re: leak down pressure test kits
Post by: AHood on February 03, 2015, 12:21:44 am
Here's what a mikuni boot pressure adapter would look like.
Fits both size carbs. Pipe threaded for pressure fitting. Block off plates would look like you can imagine. Flat plate bolt holes. Solid unless people wanted those threaded for pressure fittings optionally.

(http://i59.tinypic.com/2zizr09.jpg)
Title: Re: leak down pressure test kits
Post by: AHood on February 08, 2015, 03:20:48 am
So I will have 10 of these boot adapters soon. What other options do people require. Should I go on about the importance of pressure testing engines....
Title: Re: leak down pressure test kits
Post by: Ski-Zoom on February 08, 2015, 02:51:15 pm
So I will have 10 of these boot adapters soon. What other options do people require. Should I go on about the importance of pressure testing engines....

Nope, just finish make a kit, and then take my money, lol.
Title: Re: leak down pressure test kits
Post by: AHood on February 08, 2015, 04:07:39 pm
What block plates do people require? Exhaust bolt spacing may not fall into categories like HR ,HD  probably a multi use block plate would be good.  Does anyone need the pump for testing? Or low pressure regulator?
Title: Re: leak down pressure test kits
Post by: glen79 on February 23, 2015, 04:38:30 pm
I am interested in three Mikuni block off plugs . I would prefer solid.
Title: Re: leak down pressure test kits
Post by: foxspoiler on February 23, 2015, 10:29:08 pm
would be interested in this, thanks
Title: Re: leak down pressure test kits
Post by: Jerry racer on February 25, 2016, 01:13:38 am
+1 more interested in a full kit
Title: Re: leak down pressure test kits
Post by: _FIII on February 25, 2016, 03:47:27 am
I'd buy a kit too Adam.  Your stuff is always top notch.  I cold go either way on a pump. 
Title: Re: leak down pressure test kits
Post by: AHood on February 26, 2016, 03:47:34 am
I guess ill have to get on this project..
Title: Re: leak down pressure test kits
Post by: ilikesleds on April 24, 2016, 11:51:13 am
I'll take one! 
Title: Re: leak down pressure test kits
Post by: AHood on April 24, 2016, 09:26:23 pm
What kind of exhaust blocking plates do people need?
Ive gone ahead with the intake boot plugs.  Ill measure all the exhaust stud patterns on motors i have, but i dont have everything.  Try to make them work for multiple engines.  Dimensions from interested parties would help.
Title: Re: leak down pressure test kits
Post by: AHood on May 05, 2016, 10:27:48 pm
Heres a few pictures. Picked up the first of the carb boot test plugs.  They fit mikuni carb boots for 36-38 and 40-44 series carbs.  These will be tapped and fitted with air fittings on both ends.  Another run of plugs will not have a hole through them so you can block half of a twin if you like while testing the other half.
Title: Re: leak down pressure test kits
Post by: AHood on May 05, 2016, 10:32:49 pm
Here is a design for the exhaust blocking plate for pressure testing.  It has slotted mount holes with 70-80mm hole centers for 8mm bolts. Will come with a pressure gasket. Since no one responded. I wont be doing any other variations for different exhaust stud patterns. 
Title: Re: leak down pressure test kits
Post by: AHood on May 06, 2016, 03:05:17 pm
With boots.
Title: Re: leak down pressure test kits
Post by: sledcrazyinCT on May 08, 2016, 01:34:50 pm
excellent!
Title: Re: leak down pressure test kits
Post by: AHood on June 10, 2016, 10:13:23 pm
The test plugs are finished. Here's a couple. The solid version as well.  A twin kit will have one solid plug and one pressure fitting plug.  Working on exhaust blocking plates next.
Title: Re: leak down pressure test kits
Post by: 67Oly on June 11, 2016, 01:37:39 am
Looking on my small phone. Are those of rings?
Title: Re: leak down pressure test kits
Post by: AHood on June 11, 2016, 02:47:51 am
Looking on my small phone. Are those of rings?

O-rings?   No they are grooves. They seat on the  rasied lip inside the mikuni carb boot.
Title: Re: leak down pressure test kits
Post by: ilikesleds on June 11, 2016, 12:18:54 pm
Sorry for not keeping up.  Forgot to hit notify. Are you past exhaust measurements?  I will still take a complete kit.
Title: Re: leak down pressure test kits
Post by: AHood on June 11, 2016, 12:42:54 pm
Sorry for not keeping up.  Forgot to hit notify. Are you past exhaust measurements?  I will still take a complete kit.
Yes no one replied so im only doing a standard 2 bolt exhaust plate with hole centers slotted from 70-80mm c-c that should cover most appls. If it doesnt and people have 4 bolt exhaust or others they are sol.
Title: Re: leak down pressure test kits
Post by: AHood on August 06, 2016, 01:32:29 am
Here are the finished leak pressure test parts.   A delrin(fancy plastic) mikuni carb boot plug. Either tapped for 1/4 npt or solid.  The exhaust block off plates and an exhaust block off gasket.  The delrin plugs fit 38mm style and 40-44mm style mikuni carb boots.   The threaded plug you hook up a low pressure regulator or hand pump to pressurize the engine to 5-10 lbs. Any higher is not recommended and may blow out your seals.  The kit is sold in single, twin, or triple configurations with your choice of solid or tapped plugs.
Title: Re: leak down pressure test kits
Post by: sledcrazyinCT on August 19, 2016, 02:13:46 pm
Haven't logged in for months.  Is there a link to pics and prices?
Title: Re: leak down pressure test kits
Post by: AHood on August 19, 2016, 09:25:14 pm
You should be able to see the pics just above..?
Title: Re: leak down pressure test kits
Post by: ilikesleds on September 28, 2016, 11:21:57 am
I need to weigh in on Adam's test kit.  Got mine in the mail the other day, not knowing what to expect.  Opened the package and was instantly looking for an engine to pressure test.   :o  Decided not to take anything apart, at least not right now, I have an 81 Tigger 6000 apart on the bench.  The pieces look great and look as if they will fit on any one of my Ardee Kats.   Love the dual size Intake plugs.  I have a fury engine in a box that I bought a few years ago, spoda be a runner, time permitting, I am going to try the kit on it this weekend, and will post pictures.  Thinking right now, about how i can use the air suspension pump I got from Progressive Suspension with it, has a built-in gauge and check valve.  Will post pix, if/when I get it setup.  Thanks for the excellent pieces Adam. 

For those of you on the fence, and still using homemade stuff (my last set used lids from Heinz Chili sauce bottles), these are NICE Pieces.  Well worth the cost.
Title: Re: leak down pressure test kits
Post by: AHood on September 29, 2016, 09:24:37 pm
Thank you for the great review Todd.
 In addition at least one customer has requested carb boot leak plugs for 30-34mm size mikuni carbs.  I will not be making these as dedicated pieces but i can and have turned down an extra set of plugs to fit the smaller boots.  So you could fit all 3 size ranges of mikuni carb boots..  just another option should you need them.  Weather is getting cold, dont get caught with a leaky motor, ride time is precious.
Title: Re: leak down pressure test kits
Post by: ilikesleds on March 27, 2019, 12:06:37 am
Another successful test with the kit.  Held pressure for over 30 minutes.