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Search: Posts Made By: Ollies930
Forum: 911 Engine Rebuilding Forum 09-21-2020, 04:22 PM
Replies: 1
Views: 111
Posted By Ollies930
Way too many variables, one size does not fit...

Way too many variables, one size does not fit all. Engine rpm, displacement, compression ratio, valve size, carb, EFI, turbo, all play a role in determining the appropriate size. And porting a...
Forum: 911 / 930 Turbo & Super Charging Forum 09-14-2020, 09:59 AM
Replies: 4
Views: 296
Posted By Ollies930
Ball bearings do not like beeing submerged in...

Ball bearings do not like beeing submerged in oil, they need to be misted. If there is too much oil, then the bearings start to skid rather than roll and will give out shortly after, if condition...
Forum: 911 / 930 Turbo & Super Charging Forum 09-06-2020, 07:36 PM
Replies: 14
Views: 525
Posted By Ollies930
Brian, you are of course right. I need to stop...

Brian, you are of course right. I need to stop reading while I am watching TV. I was thinking that the OP was talking under part or full throtte, which he absolutely was not. Apologies to everyone.
Forum: 911 / 930 Turbo & Super Charging Forum 09-06-2020, 11:56 AM
Replies: 14
Views: 525
Posted By Ollies930
I would keep a careful eye on the AF gauge....

I would keep a careful eye on the AF gauge. Unless I am mistaken, an intake leak on boost would richen up the mixture rather than leaning it out. Since CIS is based on air flow, the more air is being...
Forum: 911 / 930 Turbo & Super Charging Forum 08-20-2020, 11:26 AM
Replies: 34
Views: 2,653
Posted By Ollies930
If a driver thought that the Elva frame was...

If a driver thought that the Elva frame was insubstantial, then I wonder what he would have thought of this one?

http://forums.pelicanparts.com/uploads26/Maserati_Birdcage_Chassis1597951515.jpg
Forum: 911 / 930 Turbo & Super Charging Forum 08-18-2020, 06:48 PM
Replies: 34
Views: 2,653
Posted By Ollies930
It reminds me a bit of a Maserati Birdcage. But...

It reminds me a bit of a Maserati Birdcage. But with bigger tubes, LOL.
Forum: 911 / 930 Turbo & Super Charging Forum 08-18-2020, 03:01 PM
Replies: 34
Views: 2,653
Posted By Ollies930
But the Elva MKVII was a flat 8, wasn't it?

But the Elva MKVII was a flat 8, wasn't it?
Forum: 911 / 930 Turbo & Super Charging Forum 08-18-2020, 02:13 PM
Replies: 34
Views: 2,653
Posted By Ollies930
So what are the differences between the engines...

So what are the differences between the engines in the 356 Carrera 4, the 550 Spyder and the 904?
Forum: 911 / 930 Turbo & Super Charging Forum 08-13-2020, 06:44 PM
Replies: 2
Views: 434
Posted By Ollies930
If your heads are 41mm, then chances are that you...

If your heads are 41mm, then chances are that you will have to use the 3.2 lower gaskets and trim them to match your heads.
Forum: 911 / 930 Turbo & Super Charging Forum 05-09-2020, 05:42 PM
Replies: 3
Views: 880
Posted By Ollies930
Without dimensions I would guess 935 rod bearings...

Without dimensions I would guess 935 rod bearings for titanium rods.
Forum: 911 / 930 Turbo & Super Charging Forum 04-21-2020, 11:51 AM
Replies: 15
Views: 1,002
Posted By Ollies930
I believe that the pistons from Mahle all used...

I believe that the pistons from Mahle all used the same forging die for 95mm pistons. Consequently, if you look at the underside of the pistons, they should look identical. Therefore the differences...
Forum: 911 Engine Rebuilding Forum 04-20-2020, 09:40 PM
Replies: 14
Views: 1,397
Posted By Ollies930
Interestingly, the crankshaft in the early 917...

Interestingly,
the crankshaft in the early 917 engines was a two piece design, that was epoxied together in the center. The reason they did that, from what I understand, was that they had a problem...
Forum: 911 / 930 Turbo & Super Charging Forum 04-02-2020, 06:10 PM
Replies: 21
Views: 1,200
Posted By Ollies930
It is my understanding that the largest pressure...

It is my understanding that the largest pressure gears are 51mm long and flow 83l/min at 6500rpm. The Indy/935, 3.3 930, 964 Turbo, 993 Turbo, GT3, GT3R and 996 Turbo all use this same pressure...
Forum: 911 / 930 Turbo & Super Charging Forum 03-23-2020, 06:51 PM
Replies: 5
Views: 628
Posted By Ollies930
For .050" : Intake 242/2=121 121-114=7 ...

For .050" :
Intake
242/2=121
121-114=7
Therefore intake opens at 7* BTDC
242-7-180=55
Therefore intake closes at 55* ATDC
Exhaust
228/2=114
114-114=0
Forum: 911 / 930 Turbo & Super Charging Forum 03-22-2020, 01:14 PM
Replies: 5
Views: 628
Posted By Ollies930
DC-993SS I/E @1mm 248/234 @.050" 242/228 ...

DC-993SS I/E @1mm 248/234 @.050" 242/228 Lift .490"/.455" CL 114 Lift@overlap 1.6-1.8 mm
Forum: 911 / 930 Turbo & Super Charging Forum 03-20-2020, 03:43 PM
Replies: 26
Views: 1,297
Posted By Ollies930
Those are very special hose clamps made from...

Those are very special hose clamps made from melted down Duesenberg hood ornaments!

(Sorry, could not help myself)
Forum: 911 / 930 Turbo & Super Charging Forum 03-20-2020, 08:17 AM
Replies: 26
Views: 1,297
Posted By Ollies930
The hp/torque graph in the second picture shows...

The hp/torque graph in the second picture shows peak toque at 3500rpm and peak horsepower still climbing hard at 6500rpm, so peak probably beyond 7000rpm. I find that difficult to believe. Too much...
Forum: 911 / 930 Turbo & Super Charging Forum 03-14-2020, 11:35 AM
Replies: 13
Views: 1,018
Posted By Ollies930
There are a few cams available that will increase...

There are a few cams available that will increase your top end, but typically at the expense of your bottom end. The other consideration is the added lift and duration will need to be addressed. You...
Forum: 911 / 930 Turbo & Super Charging Forum 03-13-2020, 12:58 AM
Replies: 13
Views: 1,018
Posted By Ollies930
Better how? This will depend on your driving...

Better how? This will depend on your driving style and where you want the power band. How high are you comfortable revving your engine?
Forum: 911 / 930 Turbo & Super Charging Forum 03-10-2020, 10:38 PM
Replies: 60
Views: 9,169
Posted By Ollies930
Rat540 saying that all air cooled engines need 50...

Rat540 saying that all air cooled engines need 50 or 60 weight oil is a bit of a silly statement. By that reasoning all water cooled engines would require a similarly narrow weight range oils and a...
Forum: 911 / 930 Turbo & Super Charging Forum 03-06-2020, 12:20 PM
Replies: 14
Views: 1,570
Posted By Ollies930
Interestingly, on their website the PC625 looks...

Interestingly, on their website the PC625 looks to be a more powerful and yet smaller/lighter than the PC680. I wonder if that is a mistake or if the design/architecture of the PC625 battery promotes...
Forum: 911 / 930 Turbo & Super Charging Forum 03-04-2020, 04:55 PM
Replies: 5
Views: 769
Posted By Ollies930
Ronal?

Ronal?
Forum: 911 / 930 Turbo & Super Charging Forum 02-29-2020, 10:18 AM
Replies: 94
Views: 6,633
Posted By Ollies930
Unless you need the money, don't sell it, because...

Unless you need the money, don't sell it, because chances are you will never replace it. Take it apart, assess the damage and repair as you can afford. Lots of help and advice available on this...
Forum: 911 / 930 Turbo & Super Charging Forum 02-26-2020, 01:20 PM
Replies: 60
Views: 9,169
Posted By Ollies930
After scanning over this thread, I find it...

After scanning over this thread, I find it interesting that nobody mentioned Mobil 1 0w40 European Formula, which is what Porsche recommends on their new cars. There is a mechanical engineer who...
Forum: 911 / 930 Turbo & Super Charging Forum 02-10-2020, 03:54 PM
Replies: 67
Views: 4,848
Posted By Ollies930
If piston to valve clearance is 0.4mm, then the...

If piston to valve clearance is 0.4mm, then the first time the engine got revved up all the valves would be bent. At minimum you would need .7-.8mm of clearance to accommodate rod stretch and that...
Showing results 1 to 25 of 349

 
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