The AUSubaru.com.au Forums

I've been driving the new Brumby to work for a week now and have noticed quite an annoying issue. Basically when you put your foot down a little bit or especially going up any kind of hill or slope the whole car shakes from side to side. No pinging when this occurs and it's not a vibration but a slow shake from side to side.

This engine has electronic ignition which I'm not familiar with but I checked the timing anyway, spot on factory settings. Compression test was a bit wayward with one cylinder reading 120, but I couldn't get the guage in right up to the O-ring, perhaps it leaked out there? The leads and cap are new I believe, coil is not. Front fuel filter is obviously new, haven't checked rear. Haven't checked valve clearances yet.

Since it's such a pronounced shake moving the whole vehicle, I was starting to think maybe the engine mounts are shot? problem with the engine stay rod maybe?

Just need some tips and pointers what might be causing this so I know where to look. If all else fails I've got a spare really good engine in the wagon

Silverbullet wrote:If all else fails I've got a spare really good engine in the wagon

No.....
You have a spare REALLY good twin carb in the shed.

Geeze Sam you have it all Wrong, you should be restoring the brumby and putting the twins in that.
Non of this silly wagon business.

BTW, if you want to put webers on it I found a good carby shop at Marion.
They have them lying about. Should be able to get some decent used carbys for a decent price.

Cheers Cam

Brumby Kid wrote:No.....
You have a spare REALLY good twin carb in the shed.

Geeze Sam you have it all Wrong, you should be restoring the brumby and putting the twins in that.
Non of this silly wagon business.

Nope, not gonna happen The Brum is my daily driver while the wagon is restored.

This carby place at Marion, do they rebuild carbies as well? Or just sell new/used ones?

Silverbullet wrote:Nope, not gonna happen The Brum is my daily driver while the wagon is restored.

I'm with Cam - restore the wagon, modify the brumby with the twins

Seriously though, your issue is probably more like what you've already talked about. Although I've never known a busted one to shake the car, it's usually a clunk or twisting of the other bushes that are having to take up the slack of the busted one.

Check them out with a lever of some sort and see what shows up. Double check your engine stay rod too, make sure nothing is flogged out there or sitting loose.

Cheers

Bennie

Yeah, they do everything. All I did was by allen key bolts for my adapter plate.
They even have a rear wheel drive dyno.
Auto Carburettor services, 55 Norfolf Rd. just off Marion road before Harvey Norman (from memory)

Cam

OK to the vibration - you could try by inspecting all tyres carefully inside and out side walls, tread for odd wear etc, swap with the bullets and see any change. The front CV shafts can do weird things just as you describe - not a fine oscilation vibe but strong whump whump . My guess is CV shaft

My late mdel brumby did that. It was a problem with emmission control plumbing. It dropped a cylinder (2 or 4) under load, ok the rest of the time.

Look at your gearbox and engine mounts before you go pulling the motor out, if they are the original ones you may find they are rather deminished with old age.

Then start with the obvious, vacuum leads, the hitachi (shudder) gaskets on the motor, egr valve (year?)

TOONGA

The engine has the EGR and carbon canister which I'm not familiar with either. EGR has that small diameter steel pipe going from the valve on the intake to #3 cylinder head.

Jonno the tyres are near the end of their life anyway, I'll have a look or maybe swap them over. What's a good way to check engine and g/box mounts other than just looking at them? Bennies suggestion of a lever to wiggle it around?

I have just swapped rear to front and got a wallow effect after slight road dips and running the mis matched pair at front - they look similar but aren't same brand - flippin awful

UPDATE on that wallow ......
noticed rear tyres had worn unevenly, not just inner edge but right across slowly maybe as if the rear trailing arms from bushes were stuufed. With them on the front now in unmatched tyres, matched tyres to the rear and my 60,000km old tape measure wheel alignment - time to spend some tyre money. Good old reliable dude that likes to keep tyres to himself had a set of brand new Goodyear GT3 M+S 175.70.13's he'd stripped off a 2008 Getz that someone wrote off what looks like 100 metres from the tyre shop - they still have the rubber hairs on them Previously stripped for a customer that went to get money never came back. Lucky me 'slike a new car !

Got to strip and fit my tyres on his machine and $120 later the wallow is gone and my tape measure wheel alignment is restored

The tyres on the Brum are nearly all gone, when they're done I'll change them over for the nearly new tyres that were on the touring wagon and see if it makes any difference.

Speaking of driveshafts, saw this today and thought it looked interesting. Could my shudder be considered a hesitation? because this car certainly doesn't handle hills as well as the silver bullet. Skip to 2:30 to see what I mean. Wouldn't hurt to check, I'll do so over the weekend...or whenever, 4 weeks off starting today!

http://www.youtube.com/watch?v=yjM6rTVre-0

Just dump the twin port in the Brumby to see if the hills are sorted ...you know, use the Brumby to run the engine in, in readiness for the 'bullet