

| Subject: | Re: what clues about engine health can I get... |
| From: | Chris S. |
| Date: | Tue, 15 May 2012 21:29:34 -0400 |
Factory oil pressure spec is based on 3 data points: engine speed, temperature and pressure. 2000rpm, 80C, 2 bar. If you're not using 3 data points, you're guessing. After 2 years of looking at my oil temp and pressure gauges I can tell you that water temp is a poor indicator of oil temp. Therefore, for the purpose of determining engine health, which I though we were discussing, you must use 3 data points or, again, you're guessing. And if a guess is close enough then you're ok. Chris. Wysłane z iPhone'a Dnia May 15, 2012 o godz. 20:02 Scott Daniel - Turbovans <scottdaniel@turbovans.com> napisał(a): > yes and no.. > oil temp at first tracks coolant temp. > it's going to be at least that warm. > then....the more you drive, and the hotter things are ...oil temp goes up and up gradually .. > so in terms of not exceeding redline oil temp ...a gauge is useful.. > otherwise .. > you know when it's normal and when it's extra hot .. > like when ambient temps are high ....under a lot of load , that's when oil temps can get dangerously high without much in the way of an oil cooler. > otherwise ..you know when it's well warmed up but likley not 'that hot.' > > oil pressure at an oil temp of 'par warmed up' is what of interest. > > On 5/15/2012 2:22 PM, Chris S. wrote: >> >> Oil pressure gauge is a good start, but you also need oil temp, since the two are very closely related. Half the information is close to no information. >> >> >> Chris. >> >> Wysłane z iPhone'a >> >> Dnia May 15, 2012 o godz. 15:33 Scott Daniel - Turbovans <scottdaniel@TURBOVANS.COM> napisał(a): >> >>> that's how to tell really how good/bad it is .. >>> running it. >>> oil pressure gauge on it then would be nice too. That's important info >>> on gauging engine condition and life remaining of course. >>> >>> On 5/15/2012 7:59 AM, Alistair Bell wrote: >>>> will do. I bet some of the lifters will be collapsed, motor has been sitting as is for a few years. >>>> >>>> Depending on the comp. test results, I might swap the engine in early next month. I'll be dropping trans and engine on my van then (for other reasons) and the current engine has a couple of annoying leaks that need dealing with. So I might gamble with the spare while I fix up the other one. >>>> >>>> alistair >>>> >>>> >>>> On 2012-05-15, at 4:49 AM, Kenneth Lewis wrote: >>>> >>>>> Alistar, >>>>> Pull the rocker arms and look for mushrooming valve stem ends. If you are >>>>> not going to use the engine for a while, just leave them off to relieve >>>>> pressure on the springs and hydraulic lifters. Check for collapsed or >>>>> spongy lifters. >>>>> >>>>> Ken >>>>> >>>>> >>>>> On Mon, May 14, 2012 4:11 pm, Alistair Bell wrote: >>>>>> when engine on bench? >>>>>> >>>>>> I had to move my spare engine, again, while working in the barn. I need >>>>>> to decide what to do with it. Came as a spare with my syncro. was given to >>>>>> the seller by a friend. Supposedly pulled from van to make way for >>>>>> conversion. >>>>>> >>>>>> What I can see upon casual observation: >>>>>> >>>>>> - oil leak from base of crankcase breather tower (seen that before!) >>>>>> - minor oil weeping from one valve cover >>>>>> - pushrod tubes shiny, oil and rust free >>>>>> - oil pump endplay 0.004" (good) >>>>>> - water pump seized >>>>>> - crank can be rotated, there is compression. I suppose I could rig up my >>>>>> spare bellhousing and starter to spin the bugger and test compression. >>>>>> >>>>>> >>>>>> >>>>>> So what else can I look at apart from pulling the heads? >>>>>> >>>>>> alistair >>>>>> >>>>>> >>>>>
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