Steve and Sharon Coade had there sort of official opening of their business, which sees them being more involved with the supple of hot rod parts in S.E. Qld...the open day was well supported..about 70 cars turned out, and lots of lookers coming all day long...
Steves multiple yearly trips to all the good US swap meets, means lots of rod building material , both used and new..
demand is so strong, that some of most of the recently imported frames went out the door within a week of landing
Steve is available at the shop at Ormeau, 1/2 way between Brisbane and the Gold Coast, but best phone first on 041 283 1956 ..easy # to remember..
Craig from East Coast Racecars posted these pics from the New England Rod & Custom clubs run this weekend..I've never been, but all who go say it is a top weekend in the NSW Tablelands
haven't seen any othe rpics posted that I can use, so here's four from Craig..
another question that popped up over the weekend was to do with S.B. Chev harmonic balancers, and the multitude of differences, and I realised that there is still some people that are not up to the differences, and a hopefully correct explanation here might help you one day...
There were multi sizes of engines, and most had differences in the balancers....here in Aus, we rarely get to see much other than 350s...but the full range built, in capacity, was 262-265-267-283-302-305-307-327-350-400..
typical small diameter balancer that you see on late 327s, or most 350s...O.d. can be 6 3/4" or 7"
if you buy a crate 350, they never come with a balancer, so selecting a suitable one needs a bit of research..note here that this late engine has the factory late style timing cover, with the timing marker welded at about the middle at the top..this was for real late engines with long waterpumps, and junk hanging everywhere, so you could shine your light down behind the pump..in this photo, an early balancer and bolt on side marker has been fitted...see..i told you it can be confusing unless you relaise what marries up with what..
350s only had the 8" balancer, and many people thought this was a factory way to identify a 4 bolt main, but that's a myth...I tore town hundreds, and there was only maybe 70% of them that were 4bolts....
If you see one like this, it hasn't lost the outer..it's just factory 283..basically a flange that holds the pulley..note the tab extends low so the timing can be checked ...important lesson also, is that around about when small journal engines changed to large journal engines, the factory mark on the outer ring changed about 10 degrees, and unless you realise this, you will always time it wrong using a timing light
see the cutout on the back of this 8" balancer...ALL 400 chevs use this balancer, and will shake themselves silly if you try to fit a 350 balancer...also, at the rear..400 flexplates/flywheels have a counterweight built in, where as no other sbc does..
some late 283s, and early small journal 327s ran this unusual balancer, where the larger part is riveted to the earlier 283 style balancer..you might make out here, that the early 1955-1967s have the timing mark alighned with the keyway..later balancers moved the mark around, to make it easier to see with a timing light..about 10 degrees on orange motors...and about 30 degrees on the blue or black motors...
can you imagine fitting a 7" 305 balancer to a 283, now it would work, you wouldn't see any bad vibration really...but what you would do is be scrathching your head if you had a bolt on timing marker on the side..rather than at the top like this..
The best way to check is to pull the RH side valve cover, when #6 is rocking, meaning "ex and inlet passing each other"..the engine will be at Top Dead Centre on No1....then you can choose to do one of two things..check and remark your balancer to align with the factory pointer..or make a new of modified pointer to line up with the balancer mark...and even though to a certain degree, you can mic n match... the easier way to do it is to research what engine you have, and just use the correct balancer for that engine...
maybe..in a future blog..I will show you how to pick the different engines, so you know what you have..
No comments:
Post a Comment