Intake seals

Hi guys new to the forum I need help with seal problem they have been changed by me 6 times professonal change twice the thing is when bike gets hot the seal leaks the seals don't leak when frist put in only after riding for 5 miles or so

thanks for your answer but it is not just me installing the seals they where put in by harley shop also I 'm thinking something is wrong with a head or one is getting to hot does any body know what the temp on heads should run

thanks hotroadking WHAT IS HYOMAR and where can be found

they always leak from front seal on bottom side only. can get them to seal until motor gets good an warm it's always front seal

hylomar is an anarobic sealant . it only starts to harden were there is no oxegen present on a machined surface it will seal . two machined surfaces together with no gasket at all very well . and inpefections up to 2.5 Thousands out. so for our perfectly machined harley surfaces:roflmao: it perfect! use it you will be happy if you do. next time you have the intake off .just start to snug it use the carb and air cleaner housing to get the intake lined up the best you can . snug it a bit more then pull the carb and air cleaner back off and finish snuging it down the rest of the way . the angle of the intake effects the way they seal a bit also. good luck and happy wrenching!

thanks baggerpaul for the info. I will try hylomor and if this works
I have no problem getting it to seal just keeping it sealed always on front clyinder bottom of seal is where leaks thanks again for yours and hotroadkings advice

well guys took your advice got some hlyomar sealant and new seals install them yesterday did't work same thing sealed at frist then engine good and warm seal leaks . one thing I did notice air is only come out of one vent and that is the rear head I thought both heads vent back to carb. should air be venting from both heads

Yes they should . Breather bolt clogged?

after all that has been done ,new seals,new intake ,new flanges, tried hlyomor sealant with no sucess I believe it's time to change head . has to be a milling problem or something

man i find it hard to understand that . the temp on the intake side of the head is not hot enough to warped there i may be wrong but i doubt it . before you pull the head take a strait edge and put it across the intake port and see if its strait those seals are very thick and desighned to deal with the inperfections of the head it would have to be out like sixty thousands .or more for that matter . do you have studs or bolts in the intake side of that head? if they are bolts my question would be are the bolts bottoming out before the intake is getting tight . and if there is studs are you running out of threds before the flanges pull up tight? do your home work . further more not trying to be a smart ass here when you are checking for this intake leak are we blocking the carb cleaner from reaching the carb with a piece of card board . in other words do we really have an intake leak or a front cylinder that is lean and the extra fuel is making it run properly . take a piece of cardboard and cut a slot at the bottom so that you can slide it over the back side of the air cleaner . so that extra fuel is not getting to the carb . and then you wont get a false reading from the motor .Then spray around the intake seal and see if the idle has a change does the idle drop or go high ? As you allready know the front cylinder is allways leaner than the back maybe your slow jet is actually to small , and when you spray the intake area you were getting fuel vapor in the carb and were over comming that lean condition . most intake leaks are found when the motor is cold . when the motor gets hot every thing grows tight . lets not forget that the angle the heads and intake are in . Hope this helps out some . hate to see you pull a head for no good reason.

to late already pulled heads I bought this bike about a year ago always had trouble with the way it ran.so I don't know if I bought a problem or not. I tried the cordboard trick I thougt the same thing as you low speed jet is a 48 idle mixture is at about 3 turns. bought a set of heads that only have about 1400 miles on them I hope I'm not doing all this work for nothing but I could not think of any thing else it could be we will know by next weekend I hope believe me pulling the heads was last option

Oh well hope you get it strait now . Sorry for typing so slow. Lol good luck let us know if ya got it fixed..