Found Money..
04-16-2017 | 01:24 PM
#16
Racer
Joined: Jan 2014
Posts: 485
Likes: 1
From: Winnipeg, Manitoba Canada
Squirters are common on many factory boosted engines, Volvo has been using them for over 25 years that I know, interestingly on an engine designed by Porsche. They aid in piston cooling which can be a real issue for boosted cars, not only in the obvious burn through but also in preignition. The efficiency or effectiveness of a boosted engine being largely determined by keeping the charge air as cool as possible.
It is possible that on the air-cooled cars the squirter was there to accommodate factory boosting, and didn't hurt the non boosted cars.
It is possible when Porsche developed the S4 that boosting was on the horizon. I'm curious on why the oil squirter would be more of an oil storm issue than on many cars where it works better. Possibly too much oil pressure, on the volvos the squirters have an intricate pressure management on the squirters that required external block access, not an inexpensive add.
Did the air-cooled cars run at lower oil pressures?
Lance
It is possible that on the air-cooled cars the squirter was there to accommodate factory boosting, and didn't hurt the non boosted cars.
It is possible when Porsche developed the S4 that boosting was on the horizon. I'm curious on why the oil squirter would be more of an oil storm issue than on many cars where it works better. Possibly too much oil pressure, on the volvos the squirters have an intricate pressure management on the squirters that required external block access, not an inexpensive add.
Did the air-cooled cars run at lower oil pressures?
Lance
04-16-2017 | 11:24 PM
#17
Rennlist Member
Joined: Jan 2008
Posts: 4,067
Likes: 323
From: Friday Harbor, WA
Does the enhanced "oil storm" of a squirter suggest a better baffle is needed in the fill neck? Only if you often rev it up? I didn't have a big pool of oil in my intake, but I don't think my car's PO's were rev-happy. I'm not rev-happy, either. Reciprocating loads ~ RPM^2.
I'd like to think of it blissfully as a generally harmless rarity, a distinction, a good thing in the crazy world of vintage cars.
I'd like to think of it blissfully as a generally harmless rarity, a distinction, a good thing in the crazy world of vintage cars.
For normal use, even winding to redline through the gears, is not a problem. Drive car, have fun, be happy.
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It is possible when Porsche developed the S4 that boosting was on the horizon. I'm curious on why the oil squirter would be more of an oil storm issue than on many cars where it works better. Possibly too much oil pressure, on the volvos the squirters have an intricate pressure management on the squirters that required external block access, not an inexpensive add.
It is possible when Porsche developed the S4 that boosting was on the horizon. I'm curious on why the oil squirter would be more of an oil storm issue than on many cars where it works better. Possibly too much oil pressure, on the volvos the squirters have an intricate pressure management on the squirters that required external block access, not an inexpensive add.
