How close is NC to KS?
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| My 360 oddy is running..BUT.... http://pilotodyssey.com/PO/viewtopic.php?f=32&t=8599 |
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| Author: | adnoh [ Sat Feb 05, 2011 11:19 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
Bummer, I would for sure check out the heads for warpage useing a flat bar and feeler guage. Then I would check the deck of the cylinder as well. Base gasket well "H" covered that one. After I assembly a Engine I not only do a leak down but do a water jacket test using pressre to make darn sure there not a facture,over port ect. Good luck and keep us posted. Recheck torgue on the cylinde nuts to see if a stud let go or letting go. If all hold check gasket surfaces againt the matting surfaces. Remind us again what base gasket you used, and No spacer plate? If air test on jackets fail one can remove the cylinder with the head gasket intact and turn up side down and see if it's cylinder, head or gasket. I use my four stoke leak down teaster for this so I can control the flow. If a sloooooooow leak accures then nitrogen may need to used to be sure its not an ambient issue. |
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| Author: | KUDA [ Sun Feb 06, 2011 11:08 am ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
one of the heads is shot,got exhaust gases through my water ports the second head I got 2 different compression readings in 2 days 1st one I got 142psi cold compression,but I noticed a tiny leak at the base gasket so I tore down,cleaned everything up Put back together useing hondabond with one base gasket and got about 132psi??? where the hell did the 10lbs go?,not sure if I put the head back on is same position or not,I will check that this morning...along with checking that head for warp Kuda |
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| Author: | Turbotexas [ Sun Feb 06, 2011 11:19 am ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
something ain't right... 142 on a race gas head sounds real low... 30 40 pounds low if not more... AND with gasses coming out thru the water I'm betting your jug isn't flat on top... maybe on the bottom... All that could have been checked before assembly... KUDA wrote: one of the heads is shot,got exhaust gases through my water ports
the second head I got 2 different compression readings in 2 days 1st one I got 142psi cold compression,but I noticed a tiny leak at the base gasket so I tore down,cleaned everything up Put back together useing hondabond with one base gasket and got about 132psi??? where the hell did the 10lbs go?,not sure if I put the head back on is same position or not,I will check that this morning...along with checking that head for warp Kuda |
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| Author: | bullnerd [ Sun Feb 06, 2011 11:22 am ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
How close is NC to KS?
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| Author: | KUDA [ Sun Feb 06, 2011 11:45 am ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
Turbotexas wrote: something ain't right... 142 on a race gas head sounds real low... 30 40 pounds low if not more... AND with gasses coming out thru the water I'm betting your jug isn't flat on top... maybe on the bottom... All that could have been checked before assembly... KUDA wrote: one of the heads is shot,got exhaust gases through my water ports the second head I got 2 different compression readings in 2 days 1st one I got 142psi cold compression,but I noticed a tiny leak at the base gasket so I tore down,cleaned everything up Put back together useing hondabond with one base gasket and got about 132psi??? where the hell did the 10lbs go?,not sure if I put the head back on is same position or not,I will check that this morning...along with checking that head for warp Kuda gases coming out was on the 1st head tested,it had 60psi... junk! Im going to do a warpage test not on number 2 head along with a cc count Gotta remember, these heads have sat for 10yrs or better in rennie's shop,nobody remembers much about them,when they switched to the 400+cc motors,they were just kinda boxed and forgot about.. as far as the heads go, I was told it was a race head;;at this point who knows..I was also told they were both preasure tested..LOL we know that's not true! at this point I am about ready to give up with the 360 and move onto the bigboy motor (( Internal Combustion Engine ? ))..But not quite yet,If I cant get it figured it will be benched or sent to someone that knows what they are doing...IF SOMEONE WANTS TO PLAY WITH IT?? I will post my findings in a bit Thanks for the ideas and thoughts guys! I may be chasing my tail though! Kuda |
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| Author: | Turbotexas [ Sun Feb 06, 2011 11:53 am ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
my money is on the jugs not being flat... KUDA wrote: Turbotexas wrote: something ain't right... 142 on a race gas head sounds real low... 30 40 pounds low if not more... AND with gasses coming out thru the water I'm betting your jug isn't flat on top... maybe on the bottom... All that could have been checked before assembly... KUDA wrote: one of the heads is shot,got exhaust gases through my water ports the second head I got 2 different compression readings in 2 days 1st one I got 142psi cold compression,but I noticed a tiny leak at the base gasket so I tore down,cleaned everything up Put back together useing hondabond with one base gasket and got about 132psi??? where the hell did the 10lbs go?,not sure if I put the head back on is same position or not,I will check that this morning...along with checking that head for warp Kuda gases coming out was on the 1st head tested,it had 60psi... junk! Im going to do a warpage test not on number 2 head along with a cc count Gotta remember, these heads have sat for 10yrs or better in rennie's shop,nobody remembers much about them,when they switched to the 400+cc motors,they were just kinda boxed and forgot about.. as far as the heads go, I was told it was a race head;;at this point who knows..I was also told they were both preasure tested..LOL we know that's not true! at this point I am about ready to give up with the 360 and move onto the bigboy motor (( Internal Combustion Engine ? ))..But not quite yet,If I cant get it figured it will be benched or sent to someone that knows what they are doing...IF SOMEONE WANTS TO PLAY WITH IT?? I will post my findings in a bit Thanks for the ideas and thoughts guys! I may be chasing my tail though! Kuda |
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| Author: | KUDA [ Sun Feb 06, 2011 12:33 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
COMPRESSION FROM TODAY COLD READING  Sorry caps lock stuck! doing a warpage and cc's now |
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| Author: | Turbotexas [ Sun Feb 06, 2011 12:37 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
Have you done a leakdown test yet??? |
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| Author: | KUDA [ Sun Feb 06, 2011 12:40 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
I built one, but don't trust it, starting over from scratch,nuke em is sending me his to copy |
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| Author: | Turbotexas [ Sun Feb 06, 2011 12:45 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
KUDA wrote: I built one, but don't trust it, starting over from scratch,nuke em is sending me his to copy Simple enough to make! Just use plumbers tape!!! I wouldn't do much else until the leakdown test is successful!!! |
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| Author: | KUDA [ Sun Feb 06, 2011 12:52 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
I follow you, is there a simple set of directions for making one? I will do today! here are a couple of close ups of the head,warpage test..shows no warp BUT..it has a couple of dings in it    
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| Author: | hoser [ Sun Feb 06, 2011 1:04 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
KUDA wrote: I follow you, is there a simple set of directions for making one? I will do today! here are a couple of close ups of the head,warpage test..shows no warp BUT..it has a couple of dings in it What warpage test guess I am missing something. |
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| Author: | KUDA [ Sun Feb 06, 2011 1:07 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
I ran a piece of flat stock metal across it,at no point could I slide a feeler gauge under it checked on a piece of glass too,same thing |
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| Author: | Turbotexas [ Sun Feb 06, 2011 1:16 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
Use the search feature for leakdown tester! Did yo check the jug??? |
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| Author: | KUDA [ Sun Feb 06, 2011 1:23 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
dome measurements 39cc total and about 15cc in the cc   any thoughts? |
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| Author: | KUDA [ Sun Feb 06, 2011 1:29 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
I forgot to mention I am at 3000 ft that changes compression about 14lbs putting it at about 156 psi |
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| Author: | adnoh [ Tue Feb 08, 2011 2:51 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
All great information. Before disasemmbly take a wet test on the 360. 140 dry and ? wet. By this I mean take you dry test first then pore a cap full of two cycle oil in the plug hole and then retest twice.The first crank should be within 10% of the 145 reading. If higher than that 10% then maybe ring not seated or damaged. The second should be lower than the first due to the oil disapation. If both test are with in or close to the 145 than Move on from there and finish CR calc. We have dome cc, Now we need the deck to ex open for swept volume, gasket crushed thickness and ID for gasket volume. Then get deck clearence to piston edge for adjusted piston volume. Since you have a piston n hand take the over all lenght and then teh skirt to crown edge measurement and we can use a generic volum of the crown for an approximet CR. If your not sure the rpm to which your turing be sure to hook up a battery tester and set it at or around 10 amp so you now the reading are pretty much consistant and do at mid day temps and above 60 degrees f. This should provide the best info. If all else fells use you pull rope to verify test numbes for any rpm varible. This of course your sure its, sealed up tight. When I get back home I will enter in your data and see where your at. I should be back home friday and will do saturday or sunday. The large volume of squish interests me due to the rpm range of the motor (( Internal Combustion Engine ? )). May waht to get some angle numbers for the head and the piston. If you would post up a pic in the jug of the piston at TDC (Top Dead Center) if heads off. Thanks Adnoh |
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| Author: | KUDA [ Tue Feb 08, 2011 3:47 pm ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
I am gonna get good leakdown test I trust, then I thinking on sending it to hoser to play with along with my 400+ for a dual going through I am trying to find a place local to get my piston work done first |
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| Author: | hoser [ Wed Feb 23, 2011 9:41 am ] | ||||||
| Post subject: | Re: My 360 oddy is running..BUT.... | ||||||
Top end is here, first thing I noticed is the head nuts are not seating flat on the head this will affect the final torque and clamping forces, what really needs done is better machining on the head to provide a nice flat surface for the nuts to mate too, looks like a smaller diameter nuts was used at some point in the past.
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| Author: | hoser [ Wed Feb 23, 2011 9:43 am ] | ||
| Post subject: | Re: My 360 oddy is running..BUT.... | ||
Is this the head gasket you were using when running? its 5mm too small the gasket material needs to extend all the way to the edge of the bore. Is this setup even suppose to use a head gasket their is grooves cut into the top of the cylinder for O rings, I would find out if you even need a gasket.
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| Author: | hoser [ Wed Feb 23, 2011 9:45 am ] | ||
| Post subject: | Re: My 360 oddy is running..BUT.... | ||
Deep gouge on the exhaust port bridge should not hurt anything just noting the damage must have run a short while in the past with a broken ring.
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| Author: | hoser [ Wed Feb 23, 2011 9:48 am ] | ||||
| Post subject: | Re: My 360 oddy is running..BUT.... | ||||
I don't understand the exhaust manifold on this cylinder they welded a smaller pipe inside the manifold it would be nice to know why, what the theory to make it like a nozzle affect or a anti reversion cone?
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| Author: | hoser [ Wed Feb 23, 2011 9:51 am ] | ||||
| Post subject: | Re: My 360 oddy is running..BUT.... | ||||
Then two notches were then cut into the cylinder to make room for the manifold. Unless someone could give me a reason not too I would remove the restriction inside the manifold.
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| Author: | hoser [ Wed Feb 23, 2011 9:53 am ] | ||||
| Post subject: | Re: My 360 oddy is running..BUT.... | ||||
The detail of the port work on this cylinder is not all that impressive lots of casting flaws were left behind most areas in the transfers were not even touched, its a easy fix. The roofs of the transfer ports were cleaned up real nice and a great job was done on the exhaust port not sure why they short cut the rest.
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| Author: | Nuke Em [ Wed Feb 23, 2011 10:30 am ] |
| Post subject: | Re: My 360 oddy is running..BUT.... |
I agree with the blending the exhaust spigot to the port, amazing it was not done...and the transfer ports look un touched too. I was expecting serious work in there. Exhaust port didnt look polished from the pics, more easy HP to be gained. Going to be very cold this weekend so I will tear into my stuff and see whats been done to them.
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