Hi,My name is Alvaro, I am from Buenos Aires, Argentina, and together with my brother-in-law we arm 100 % does a little time this
Porsche Cayman
987 for track.
The car we it buy with the engine out, tape-worm two broke connecting-rods, with a lot of effort we it arrange, importing piece for piece from USA because here in Argentina we do not have almost anything of these supplies, and those who are, they are very expensive.
We arm the car std, alone the housing was placed with it breaks waves and nothing more. It armed itself with suspension racing D2, and slick tyres for circuit. The first time that we are going to the track, the car to her third return remains without pressure of oil after a curve to the right and begins to hit. We stop it and do not use it more, the mechanic opened it, and the result was, again the cushions of connecting-rod more distant to the oil pump, broken.
From Argentina there are no many possibilities of testing and mistake, are not necessary to fail, are quite very difficult to obtain and very expensivly. For this motive, we want that they help us to solve our problem. Does which would be the definitive solution in order that it comes to him oil to this connecting-rod? To place an Accusump? We want to spend alone money once and to be able to use our
porsche
in track without breaking anything.
I hope that they could help us, and ask for excuses for my so bad Englishman. Later I leave some photos of the car them.
Alvaro, There are a number of choices for you to rebuild you 987.
#1. Buy a wrecked 987 and take out the old engine and replace yours with that one. Hopefully its an 3.4 motor. Then order a LN deep sump oil kit from the US. It will increase your oil amount by 2 qts, so the idea is to locate the oil around the oil pick up feed and to not allow the oil to go up the walls of the sump by the use of a windage tray. The included 997 return tubes to help return oil from the heads as rapidly as possible to the windage tray/sump, rather than use 996 oil/air bubble separators (swirl pots) which inpede the flow of oil from the heads to the sump.
#2. Rebuild the old engine, keep in mind that many have tried this route, but the small amounts of bearing material has spread around the inside of the engine, which later will cause additional damage unless the entire engine is broken down, all metal is removed, crank polished and within specs.
#3. Buy a 6.2 liter Corvette crate engine and have a shop install it like Joshua did. 500 hp and massive torque, please see post #10 and #17 of
Re: Performance Mods for CA Daily/Frequent Driver 981 Cars?
I nearly doubled the displacement to 6.2 liters... We're in Bend, Oregon so we don't have DEQ...
Thank you Apex1, here in Argentina we do not have possibility of replacing the engine with new one. There are no engines of these and to import one of USA are impossible. The engine is 2.7L, and I had a mistake of writing in the title of the thread, it is M97. The car already has a kit Deep Sump Oil (photo attaches). To buy a Corvette is an option hahaha. Because of it is my question if to place an Accusump would solve all our problems of lack of oil?
Alvaro,
No windage tray! You need that part to prevent the oil sloshing up the side walls of the sump causing oil starvation and oil/air contamination. This kit uses the OEM oil pan and a oil pan extender for an additional 2 Qts of oil. LN told me that they have not had one rod bearing explosion due to oil starvation with this kit. Missed downshifts are another story. 7500 rpm or higher are not good for
987.1
rods bolts.
2.7 motor!!!! what type of tires were you using and what oil?
This kit does not include a windage tray to keep the oil contained in the sump. It has the baffle X51 container, but on long high G force corners with R rated tires, where you have plenty of RPM's, the oil supply within the X51 container gets consumed by the engine oil pickup, then sucks up air causing oil starvation. With the LN extend kit, the windage plate prevents the oil from sloshing up the sidewall from the 2 qt deeper sump, so you have a greater oil capacity located in the space between the oil pan and the windage plate.
You should also investigate over 100,000 PSI engine oil like is run in flat tappet motors to prevent oil heat and pressure breakdown, burning, bluing and allowing metal to metal contact of the camshaft and tappets (our case would be #6 rod bearing being the furtherest away from the oil pump). This type of engine oil withstands the high heat and PSI allowing the boundry film to prevent metal to metal contact caused by oil/air contamination and low oil pressure (cavation in the oil pump from air bubbles and lack of oil).
So, run deeper sump with a windage tray to keep the oil pressure up, and motor oil with high PSI ratings when boundry film is exposed due to air/oil contamination.
Here is the reference source for over 100,000 PSI data;
Boundry Lubrication, "motor oil engineering test data/540 RAT", seems that our engine #6 rod bearing mimics flat tappet cam issues by allowing metal to metal contact after oil breakdown from high PSI and heat.
Others web authors have refuted these results due to repeatability issues, most likely from lower rated oil companies who do not see the need for high PSI oils.
Amsoil 5W30 Signature Series Synthetic 134352 PSI@230 degrees, 124573 PSI @275 degrees rated #3;
Mobil1 0W40 "FS" European Car Formula, 127221 PSI @230 degrees, rated #5.
Mobil1 0W40 European Car Formula, 82644 PSI @230 degrees, rated #122. Do not confuse these two Mobil 1 oil products, "FS" is key.
I guess if we had flat tappet camshafts,or potential for air/oil starvation exposing the boundry film, we should be using these oils.
