Good head.

**kro** · 24th July 2006, 19:32

Get your freaking minds out of the gutter, you pervs.

The head on my DR has gotten noisy. Cause - play on the cam "bearing" surfaces. Now seeing as they run the cam in the metal of the head, with no replaceable bearing shells, I have been told to see if a local engineering shop would recoat the cam, the machine out the head bearing surfaces.

Does anyone know an engineering shop that would/could do this.?

Love you all, except N4CR, that is all.

**T.W.R** · 24th July 2006, 19:44

Denco Engineering in ChCh would be a good bet to contact

PO Box 10193

419 St Asaph st
Christchurch

ph: 03 381 2111
Fax: 03 381 2069

or another in your neck of the woods

Baz Bikes

Robinsons Rd
Upper Moutere
Motueka
Ph/fax: 03 526 7175

**paturoa** · 24th July 2006, 19:50

About a million years ago (very early 80s) I had a DR400 that had similar prob.

Took it to a machine shop in newmarket (closed now) and they/he welded (tig?) some more material onto the cam face and line bored the hole again so that the standard cam was a flush fit. Worked a treat and was the cheapest option then.

**kro** · 24th July 2006, 21:18

Thanks troops.
I went to Baz Bikes on Saturday, all his DR stuff was worse off than mine, so it's a whole DR/GN head second hand, or this recoat/bore trick that pat' has suggested.

Hi TWR !!!

**merv** · 24th July 2006, 21:37

Back in the 70's McIver and Veitch in Dunedin did needle roller bearing conversions on Honda XL heads that had run the cam bearings. I'm not sure if that's a possibility with the DR head but a good engineering shop should be able to advise on that as an alternative.

**cheese** · 24th July 2006, 21:37

boss engineering in wangavagus seemed to know what they are on about.

**T.W.R** · 24th July 2006, 23:31

Originally Posted by kro

Thanks troops.
I went to Baz Bikes on Saturday, all his DR stuff was worse off than mine, so it's a whole DR/GN head second hand, or this recoat/bore trick that pat' has suggested.

Hi TWR !!!

How ya doin Kro, apart from this slight mishap?

You've done the Baz thing huh,

Another option but in ChCh may be HPE (Hills Performance Engineering) Ph 0800 4 732673 or Kelford Camtech 03 366 4514

both pretty clever when it comes to cam repair & needle roller coversions

**kro** · 25th July 2006, 17:51

I priced up some top ends off GN's today, and they start about $350 for a guaranteed good one, so I think I might swing that way, plus get the old girl rebored, and oversized. It only has to last me another year or so, and I'll get another beast like a TT350, or DR350.

**Maha** · 25th July 2006, 17:56

Coincidence????......when i looked at the Tread title it had 7 replies 69 views...

**kro** · 25th July 2006, 18:58

HAHAHAHa, that's gotta be a sign if ever I saw one.

**kro** · 26th July 2006, 17:11

I bought a 2nd hander off Hawera Motorcycles, very helpful people indeed.

**Ocean1** · 27th July 2006, 17:10

Needle rollers are OK if there's room for the extra diameter in the head.
Best fix I found was to grind the cam bearing diameters to clean them up, over-bore the head with a rough-as-a-bears-arse finish, pour whitemetal in-situ and bore to suit the new cam diameters. Now, finding someone to do it...

Luck.

**NordieBoy** · 28th July 2006, 13:09

So Kro, are you and Gary going to do the 6-hour?

**kro** · 28th July 2006, 17:01

I laugh in your general direction. Short answer no, long answer no. I can barely stay awake 6 hours these days, let alone ride for that long. The way things are going now, I'll be lucky to have the DR running by then