AQ171C, or VP 251DOHC (but same assembly is found on AQ151 or VP 250 as well).
Does anyone have the the torque spec for the large 29 mm nut that holds the oil cooler mounting flange to the engine block?
I have the factory manual but have not been able to find that information there...
If you look at the attached photos, there is a fair amount of corrosion (pitting) on the exhaust pipe, but not much on the manifold.
My take on this is that the exhaust connector (the rubber bellow) was in this case installed a tad too far down on the "pipe", allowing water to pool up inside...
Both these photos are taken on the starboard inside of a SP-A transom shield.
First photo shows a sticker that is easy to read (at least for me).
In that same photo, you can also see the hydraulic lines going into the transom shield.
Under those lines, on the "true" starboard side of the...
Engine: VP AQ171C (I-4, DOHC) / 868114, Serial: 2200205833 3888
Outdrive: VP AQ SP-A, Serial: 3102081316
Just curious, how deep into the block is the dipstick tube supposed to "penetrate"?
I know it is a tapered fitting, it does not leak, the tube does not come out, nor does it move further...
Re: Motor mount question, Volvo 4-cyl 1983 gas 270 I/O
Dennis,
In case you want some photos on the "stock" front motor mounts for a "B230" block (sorry, photos are old and taken for another purpose, but maybe they can help guide you a bit). BTW, these are from an AQ171C (same block as you have...
Re: Need some opinions
Just based on the photo, it looks like you have an engine with a B23 block and then most likely Solex carburetors.
In my opinion, they are easy to "renovate" but I'd strong advise you to 1) take photos as you take them apart, 2) have a new seals/gasket kit, and then of...
As far as I know Volvo Penta delivered most/all of the Aquamatic single prop drives with a LH rotating propeller. Those drives can VERY easily be switched to support a RH propeller.
Any ideas if one or the other is "preferred"?
I've always run a RH, but is now to buy a new one. A LH might help...
Looking for a few inputs before switching prop...
Engine/outdrive combo: VP AQ171C (SP-A)
Boat: Wellcraft 192
Normally running 3-blade, RH 14x19
Been running 3-blade 14x19 (dia x pitch) for a few years. Works great, better than the 14x21 that does increase top speed a bit, but also barely...
