Author Topic: 74 CB750 Navy Style (Read 80474 times)

brandEn · « **Reply #225 on:** March 14, 2013, 03:47:26 PM »

whoa nomad! Nice. Where can I get one of those decals for my indicator panel?

Harsh · « **Reply #226 on:** March 14, 2013, 04:05:16 PM »

Quote from: nomad on March 14, 2013, 11:55:48 AM

If you're thinking stripes, here's the way I went... silver tank, off white HONDA badge, black/ off white (same shade as badge) stripes. I'm still not sure about the chrome trim around the tank. I'm not even sure where I'd find the stuff. I may just reupholster the seat without the chrome.

Maybe these will give you an idea wether or not you want to go in this direction (with your colors of course)...

That is pretty much what I was thinking about. I would like my center stripe a little bit wider though. I have read here that you can use the plastichrome trim found at auto parts stores.

I like your gauge piece as well.

I think I figured out the headlight today. Not sure what was causing it, but I started from the beginning (jumpering the on/off switch wires) then put the rocker switch back in and everything worked. I must have goobered something up.

I thoroughly cleaned and inspected (making sure there were no cracks in the nut or flange) the oil supply line then re-attached it to the tank then attached the tank to the bike. Doing it that way I was able to torque it down bit more. Put everything else together kicked it over a number of times. Probably around the 10th or 15th kick I noticed the gauge needle starting to jump pretty good. At that point I stopped kicking and went to the electric start. Using that it held pretty solid right at 70psi. The other day when I did it, it was bouncing between 65-70 psi. I will let it sit again for a few days and see what happens. Hopefully re-torquing it down fixes the problem.

RAFster122s · « **Reply #227 on:** March 14, 2013, 04:37:33 PM »

SohRon posted some templates a while back with the graphics for the idiot lights.
http://forums.sohc4.net/index.php?topic=113234.msg1274572#msg1274572

or original:
http://forums.sohc4.net/index.php?topic=113254.0

nomad · « **Reply #228 on:** March 14, 2013, 04:55:09 PM »

Quote from: brandEn on March 14, 2013, 03:47:26 PM

whoa nomad! Nice. Where can I get one of those decals for my indicator panel?

Thanks. I got the plate from Yamiya a couple of years ago when they had them on eBay. I don't think they still offer them there. I guess you could get them to ship you one from Japan... http://www.yamiya750.com/index.php?main_page=product_info&cPath=144_72&products_id=737

Harsh · « **Reply #229 on:** March 15, 2013, 12:53:10 PM »

Well there was no oil on the ground when I got home from work and no evidence of a leak.

So I decided to fire her up. There was good and bad. The good...She fired up relatively easily. I couldn't hold the camera and start it at the same time, but was able to start the camera shortly after it started. The bad...I have two oil leaks. Both are at the front head area. I think I was able to tighten one of the valve cover bolts a little bit and it might have sealed it up. The other I am not sure about since it is coming form inside the fins and dripping down. From the location I think it might mean pulling the engine and removing the valve cover and re-torque the head bolts.

Here is a short crappy video.

RAFster122s · « **Reply #230 on:** March 15, 2013, 01:04:07 PM »

Congrats on the successful start and run, once you have the rest of the exhaust on it will quieten down considerably and you can tune it properly. Hope the leaks are quickly abaited...

Are you possibly being affected by this sequestration and austerity that is kicking in?
Friend's buddy was working 5 days a week on F35 flight test at Edwards, he was immediately kicked back to 4 days a week with big ? marks on the program.

Read today about the painter on the USS Miami fire that did 450 Million in damage to that nuclear sub. Idiot should be jailed for life, anxiety attacks and he set not one but 2 fires before they arrested him. 2nd fire outside the sub a few weeks later. 25 yrs old and seriously messed up...

David

Harsh · « **Reply #231 on:** March 15, 2013, 01:10:54 PM »

Thanks. My mind is wandering with anger and fear. First. I torqued everything down and double checked them before moving on and used all new gaskets, pucks and o-rings so it really angers me that it is leaking. If I have to pull the engine to fix a leak I am definitely not looking forward to that.

The sequester doesn't really effect me except that it will now be harder to get parts and we have less money for things. Some of the civilians that work with us have already been notified that they will have to cut two days a month out of their schedule.

Harsh · « **Reply #232 on:** March 15, 2013, 02:08:13 PM »

Well I took another look at if after it cooled off a bit. It appears to just be leaking at the valve cover around the #3 spark plug hole. I torqued all of the valves cover bolts down, cleaned up the oil that was there and fired her up again. I thought I was good since I didn't see any oil seeping. Then I shut it down and that is when the leak came back. I am afraid to torque it down anymore for fear of stripping something.

I am open to suggestions here folks because the only thought running through my mind is to pull the engine, check the mating area, and replace the gasket.

Vinhead1957 · « **Reply #233 on:** March 15, 2013, 02:43:39 PM »

Isn't that an oring type gasket?no need to pull the engine just put a new one in.

deafcaferacer · « **Reply #234 on:** March 15, 2013, 03:02:23 PM »

Congrats on the first start. That must feel good.

Harsh · « **Reply #235 on:** March 15, 2013, 03:24:03 PM »

Quote from: Vinhead1957 on March 15, 2013, 02:43:39 PM

Isn't that an oring type gasket?no need to pull the engine just put a new one in.

Nope. It a full valve cover gasket. In order to lift the valve cover you have to pull the engine unless you have a frame kit (which I do not).

Quote from: deafcaferacer on March 15, 2013, 03:02:23 PM

Congrats on the first start. That must feel good.

It did feel good, but defeating about 5 minutes afterwards.

Harsh · « **Reply #236 on:** March 16, 2013, 09:16:51 AM »

I decided to try and redo the complete torque sequence and shimmy the gasket a bit to see if it helped any. Yah not so much.

You can see that the gasket sticks out a bit further than normal. As far as I can tell (there isn't much room to stick your head in and see) it covers the mating surfaces on the inside.

Here is the leak.

It appears to drain down and come out on the fins. I did notice that the fins started to show a very tiny amount of leakage before the corner did. It is very possible that I didn't get all of the residual oil out of the spark plug hole. It is hard to get in there and clean it completely with the engine installed.

Harsh · « **Reply #237 on:** March 19, 2013, 02:50:24 PM »

Picked up an engine lift today from a buddy so hopefully in the next few days I can get the engine out and get this thing fixed.

Harsh · « **Reply #238 on:** March 21, 2013, 04:47:28 AM »

Pulled the engine yesterday and popped the valve cover off. I confirmed that I had the gasket installed correctly. A quick look of the surfaces showed that there are no nicks or deformations and that they are flat. Looking at the gasket it looks like there is a spot where there was no indentation from the valve cover or head. You can see the indentations run right to the edge of the gasket then nothing. I am going to order an OEM gasket today.

Vinhead1957 · « **Reply #239 on:** March 21, 2013, 03:50:38 PM »

Try checking the cover with a straightedge longitudinally it could be warped

Harsh · « **Reply #240 on:** March 21, 2013, 05:21:03 PM »

Took a straight edge to everything and all surfaces are flat and straight with no warpage. However, I was able to take a good look at the surfaces tonight with good light. The valve cover has three tiny marks on the edge where the leak was. I wonder if this could have anything to do with the leak. I would like to think the gasket would seal around that especially since they are on the inside edge. Unless anyone can tell me why not to, I am going to take a jewelers file and remove the lips of the dings to get a smooth surface.

Vinhead1957 · « **Reply #241 on:** March 21, 2013, 05:39:29 PM »

Looks like it got dinged. Make it flat. Might want to use a little permatex formagasket along that front edge with a nice new gasket. Not very much, just a thin gasket coating to be sure. You could install it and pull it off again to check the "spot" before putting the engine back in the frame. I would also retorque the cover after the engine comes to operating temp!

brandEn · « **Reply #242 on:** March 21, 2013, 05:49:44 PM »

This is just a though but there are locating dowels on the cover that could hold the cover up if they are not seated properly. I had this happen on my build. Worth looking at anyway.

Also, maybe use a bit of Gasgacinch on your gasket when you install it.

Harsh · « **Reply #243 on:** March 22, 2013, 03:33:31 AM »

Thanks fellas. I will look at the dowels again, but I am pretty sure I checked them when I first put everything together and the valve cover sat flat on th ehead without a gasket. However, it won't hurt a thing to double check it. Before I take the jewelers file to it I am going to cover the surface with a sharpie so I can visually see how much material is being removed.

iron_worker · « **Reply #244 on:** March 22, 2013, 06:38:08 AM »

I don't think those dings are really enough to make it leak unless they are a lot more raised than it looks. I think what you pointed out first that the gasket may have been out of alignment was probably the issue. As mentioned you can used some gaskasinch to hold the gasket in place while installing so that all surfaces line up correctly.

IW

Harsh · « **Reply #245 on:** March 22, 2013, 07:59:07 AM »

IW...I initially thought the same thing, but since they were in the same area I have the leak I couldn't come up with another viable reason. They are not raised any more than they appear. I played with the gasket yesterday and once it goes over the locating dowels it is held in place very well, especially in the front. I just don't know. I looked locally for some Gasgacinch, but couln't find any. Hopefully the Permatex 2 in conjunction with a new gasket will work.

Harsh · « **Reply #246 on:** March 22, 2013, 03:57:23 PM »

I went ahead and filed the dings out. I took another look at the gasket and am pretty sure it was the culprit. I can clearly see where the indentation from the head slides off the back edge providing zero gasket material between the head and valve cover.

Harsh · « **Reply #247 on:** March 27, 2013, 02:29:39 PM »

Woo Hoo The new valve cover gasket came in today. I did a dry fit and the cut is so much better than the other one. Tolerances were much tighter. I debated for a second whether to use the Permatex 2, but decided it would be better to apply a thin coat. I don't want to have to pull the engine again for another leak. So the gasket and valve cover are on.

I would install the engine today, but it is starting to look pretty nasty outside.

deafcaferacer · « **Reply #248 on:** March 27, 2013, 03:26:37 PM »

That's gotta be a good sign. Same here on nasty weather.. Spring is never going to get here.

Harsh · « **Reply #249 on:** March 28, 2013, 07:42:24 AM »

Good sign ...YES. Unfortunately, I won't be able to get the engine back in the frame until Saturday. Today after work I am holding practice for a retirement ceremony I am leading for a 26 year active duty Sailor. Friday is his ceremony and of course after which there will be a shin dig. So that means Friday is out as well.

Hopefully the good sign will equate into zero leaks and a smooth running engine.

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Author Topic: 74 CB750 Navy Style (Read 80474 times)

nomad