Low Oil Pressure on Hard Deceleration, 2.056L with Dual Carbs Options

[Spoke]

I bought this allegedly running-when-it-was-pulled 2L engine last year to upgrade to 2.056L just to find out it already had 96mm P&C.

Internals turns smoothly so I thought I'd do the flame test and clean the engine and put it back together. The engine runs strong and smooth.

As I started driving it harder I noticed on fast deceleration the oil light would come on.

If I let the engine speed come down naturally from about 2k, the oil light doesn't come on.

Last night coming off the highway running about 3.2k, I immediately shifted into neutral to let the engine slow on its own, the oil light came on for a few seconds as the engine was now idling.

I don't have an oil pressure gauge on it to see where the oil pressure is during operation.

Any ideas of what to look at?

[Tom_T]

Spoke,

Both my `73 914-2.0 & our `88 VW Westy 2.1L WBX4 (both stock) will do that on occasion under those circumstances of decel. IIRC it's a matter of engine revs dropping fast also drops rpms of the oil pump, while the higher speeds had the oil up into the working parts of the engine, until it catches up & equalizes the OP. If it stays on after the engine settles into idle or the next gear after slowing down, then it would be more of an issue.

It may not be a big issue, although I'll let the actual pro mechanics on here weigh in on that issue.

Meanwhile, you need to change that `Quins logo out for the Steelers one for tonight's opener! (IMG:style_emoticons/default/piratenanner.gif)

PS - You might want to add a VDO OP + OT, CHT & Voltmeter gauges to an auxiliary cluster to keep track of the vitals. If your 71 has a center console (added OE or repro), then you probably already have the OT & VM in it. I'm thinking of getting an old ashtray to mount a VDO 2 gauge mount on the face where the pad is (removing pad) to add the OP & CHT there when I get to that point on mine, but I think a VDO 3x cluster might fit there for your OP too - if not in your center console - or VM there & get a Combo gauge with OT + fuel to swap into the dash pod. I've also seen some nicely done repro center consoles with all those gauges in a modified 5-6 gauge cluster (6 with VDO clock). Also someone on here used to make 4x combo gauges with inserts for fuel + 3, & IIRC North Hollywood Speedo &/or Palo Alto Speedo will do such custom gauges too.

(IMG:style_emoticons/default/beerchug.gif)
Tom
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