Author Topic: 72 CB350 Build For The Wife (Read 68195 times)

grcamna2 · « **Reply #50 on:** July 03, 2014, 02:25:54 PM »

They sure look nice and clean now Harsh

Harsh · « **Reply #51 on:** July 04, 2014, 01:53:18 PM »

Spent a good part of the day filing and sanding the edges of the fins. I still need to hit them with some 1k and 2k wet sandpaper to get them nice and shiny.

calj737 · « **Reply #52 on:** July 04, 2014, 01:58:29 PM »

Harsh - make sure to treat/coat those studs too. After being blasted, they'll corrode pretty quickly.

grcamna2 · « **Reply #53 on:** July 04, 2014, 04:50:55 PM »

Harsh,those fins all look very even and uniform,I can't wait to see the finished product

Harsh · « **Reply #54 on:** July 05, 2014, 10:36:46 AM »

Finished up the sanding/polishing of the head and jugs this morning.

I also finished polishing up the foot controls and kickstarter.

grcamna2 · « **Reply #55 on:** July 05, 2014, 11:04:37 AM »

Them chrome pieces came out nice,what did you use on them ?

Harsh · « **Reply #56 on:** July 05, 2014, 11:48:10 AM »

I hit them with some fiber discs on my die grinder to get rid of most of the casting marks. I then hand wet sanded them with 600, 1000, and 2000. Then moved onto the buffing wheel. Started with black, red, then green compound. I did have to soak the brake pedal in prep-n-etch to get take care of the rust on the underside.

grcamna2 · « **Reply #57 on:** July 05, 2014, 12:04:06 PM »

OK,so that was a good bit of work to get them that nice

SOHC4 Cafe Racer Fan · « **Reply #58 on:** July 05, 2014, 05:38:30 PM »

The jugs and head look sharp with the polished edges.

Harsh · « **Reply #59 on:** July 09, 2014, 05:02:15 AM »

Dropped the head off at a local machine shop yesterday afternoon with some pictures that had the dimensions laid out on them of what I need done. I really hope they don't screw this up. Below is what it should look like when all finished. This is so I can fit the new cam chain tensioner in place. Should be ready tomorrow. Cost me $50 which I think is a fair price.

grcamna2 · « **Reply #60 on:** July 09, 2014, 07:33:24 AM »

Harsh $50 is an excellent price

Harsh · « **Reply #61 on:** July 22, 2014, 05:27:10 AM »

Well it looks like the build is going to be stalled for a while. I still haven't gotten the head back from the machine shop. The guy that owns the place has been out of town because of his ailing father. Next Tuesday I go in for neck surgery so even if I get the head back in the next couple of days there simply won't be enough time to finish prepping for paint, paint it, and assembly. I was really hoping to have the engine done before I went in for surgery.

calj737 · « **Reply #62 on:** July 22, 2014, 06:43:16 AM »

Chin up, Harsh! This bike has waited 42 for you to remake it. It can wait another 6 weeks

Besides, the Mrs needs to spend some time looking after you and not riding her new bike.

Here's hoping that surgery goes really well, and that your recovery is full and speedy. Ring out if you get a bit bored, I'll pack up some goodies and stop down to help take away the blues.

Harsh · « **Reply #63 on:** July 25, 2014, 05:53:29 AM »

Thanks Cal I appreciate the offer.

Well wouldn't you know it the machinist finished the head yesterday. I go to pick it up and I instantly knew it wasn't correct. I provided detailed measurements, instructions, and pictures with the measurements yet he still messed it up. He didn't make it long or deep enough. Story of my life. It was 1.5" long and .5" deep. I needed it 1.8" long and 1.5" deep. He got the width of the cut correct.

He is supposed to fix it first thing today. Needless to say he won't be getting any more work from me.

SOHC4 Cafe Racer Fan · « **Reply #64 on:** July 25, 2014, 07:41:19 AM »

Quote from: Harsh on July 25, 2014, 05:53:29 AM

Thanks Cal I appreciate the offer.

Well wouldn't you know it the machinist finished the head yesterday. I go to pick it up and I instantly knew it wasn't correct. I provided detailed measurements, instructions, and pictures with the measurements yet he still messed it up. He didn't make it long or deep enough. Story of my life. It was 1.5" long and .5" deep. I needed it 1.8" long and 1.5" deep. He got the width of the cut correct.

He is supposed to fix it first thing today. Needless to say he won't be getting any more work from me.

Funny comment, but not funny about the machinist screwing up your instructions. On the positive side, at least he didn't remove too MUCH material.

bjbuchanan · « **Reply #65 on:** July 25, 2014, 03:47:13 PM »

Quote from: CB750 Cafe Racer Fan on July 25, 2014, 07:41:19 AM

Quote from: Harsh on July 25, 2014, 05:53:29 AM
Thanks Cal I appreciate the offer.

Well wouldn't you know it the machinist finished the head yesterday. I go to pick it up and I instantly knew it wasn't correct. I provided detailed measurements, instructions, and pictures with the measurements yet he still messed it up. He didn't make it long or deep enough. Story of my life. It was 1.5" long and .5" deep. I needed it 1.8" long and 1.5" deep. He got the width of the cut correct.

He is supposed to fix it first thing today. Needless to say he won't be getting any more work from me.

Funny comment, but not funny about the machinist screwing up your instructions. On the positive side, at least he didn't remove too MUCH material.

That's the first thing I thought, at least he didn't take away any extra

Harsh · « **Reply #66 on:** July 25, 2014, 03:50:26 PM »

I don't disagree, but it is frustrating when a professional can't get things correct when they are clearly communicated.

Toustic · « **Reply #67 on:** July 25, 2014, 04:00:15 PM »

Subb'd

I also wish you prompt recovery from surgery and look forward to seeing what you're gonna do with that little 350.

Best,
Toustic

Trad · « **Reply #68 on:** July 25, 2014, 04:05:32 PM »

Nice work on the fins! Love the attention to detail. Are you leaving the cylinder raw alloy?

Harsh · « **Reply #69 on:** July 26, 2014, 01:39:18 PM »

Quote from: Trad on July 25, 2014, 04:05:32 PM

Nice work on the fins! Love the attention to detail. Are you leaving the cylinder raw alloy?

No. If you look back to post #40 I posted a pic of what I have in store for paint.

Harsh · « **Reply #70 on:** July 30, 2014, 02:37:00 PM »

Had my surgery yesterday. Everything went well. I chose to go with the Mobi-C artificial discs. Now I am supposed to take it easy for the next 42 days I have off from work. That is going to drive me crazy since I can't stand to sit around and do nothing. I had to stay overnight for observation, but was released this afternoon. Other than a very sore throat I don't have a whole lot of pain.

In the pre-op staging area before any drugs were administered. Just being my normal goofy self.

A post-op selfie.

calj737 · « **Reply #71 on:** July 30, 2014, 02:50:20 PM »

Looking good, Harsh!

SOHC4 Cafe Racer Fan · « **Reply #72 on:** July 30, 2014, 03:50:05 PM »

It sounds like the surgery was without complications. Recovery sounds like a PITA - 42 days of "rest". Plenty of time to do research, procure parts, blog, etc.

Take it easy and get well. You will still have some riding weather waiting for you on the other end.

Don

Davidov · « **Reply #73 on:** July 30, 2014, 06:40:48 PM »

Quote from: Harsh on June 22, 2014, 02:24:36 PM

When I looked at the right head cover I noticed a little marring to the surface that rides against the cam shaft. It wasn't until I got the cam shaft out that I realized the spacer was on the wrong side. So it was either initially assembled wrong or someone along the way messed up. However, a closer look at the head cover shows that there might have been a spacer there. If you look in the lower right hand corner you can see a chunk of something. I picked at a corner of it and a little piece flaked off. I didn't notice any wear on the cam shaft though.

Here you can see how the left cylinder wasn't firing.

Head looks good. There was lots of clean oil at the top so that is definitely a good sign.

If you didn't already know....
There can be 1 or 2 of those thin "shims" on either side of the camshaft. There's a spec for axial play (side to side, end play) that you check with a feeler gauge.
Those can also get chewed up from oil starvation.

This guy made his rebuild look easy, from HondaTwins.net
http://www.hondatwins.net/forums/48-engine-discussion/17947-sl-350-engine-rebuild.html

Harsh · « **Reply #74 on:** August 04, 2014, 11:28:43 AM »

Feeling better so I thought I would poke around in the garage today. However....

So pissed off right now. I went to pick up the head from the machinist and he completely destroyed it. He went about 1/8" too far out on one side which blew out the wall. He attempted to cover it up using some epoxy, which when you press on it you can feel it move in and out of the hole. It looks like a 2 year old went at it with a dremel. Which amazes me since the first time I went to pick it up everything was nice and smooth, but the dimensions weren't correct. So it looks like I am in the hunt for a new head.

The dark spots are where it blew through the wall and you can see where he didn't clean up the epoxy on the mating surface.

News:

Author Topic: 72 CB350 Build For The Wife (Read 68195 times)