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Search: Posts Made By: Steve@Rennsport
Forum: 911 Engine Rebuilding Forum 05-22-2018, 12:38 PM
Replies: 4
Views: 391
Posted By Steve@Rennsport
The case halves should be machined flat and line...

The case halves should be machined flat and line honed, no matter what. :) :)
Forum: 911 Engine Rebuilding Forum 05-21-2018, 01:46 PM
Replies: 11
Views: 477
Posted By Steve@Rennsport
Hi, It sounds like you need new P/C's (can't...

Hi,

It sounds like you need new P/C's (can't tell without pics), but my main concern is debris in the engine from the piston failure.

One would need FAR more detailed information before...
Forum: Porsche 911 Technical Forum 05-01-2018, 10:24 AM
Replies: 127
Views: 26,029
Posted By Steve@Rennsport
Don't overlook the Pirelli Trofeo R's. Its an...

Don't overlook the Pirelli Trofeo R's. Its an excellent street/track tire for dry conditions.
Forum: Porsche 911 Technical Forum 04-09-2018, 10:08 PM
Replies: 22
Views: 930
Posted By Steve@Rennsport
Not with stock (or RS) cams. :) :) A race...

Not with stock (or RS) cams. :) :)

A race engine would be using a different cam profile and for that, 50mm carbs are appropriate.
Forum: Porsche 911 Technical Forum 04-05-2018, 12:20 PM
Replies: 44
Views: 1,779
Posted By Steve@Rennsport
I used to keep two large garbage bags of domestic...

I used to keep two large garbage bags of domestic filters I removed from customer cars just to show people what happens. With one exception, they all ballooned and or split at the crimped seam....
Forum: 911 Engine Rebuilding Forum 04-03-2018, 10:06 AM
Replies: 19
Views: 1,321
Posted By Steve@Rennsport
Ask them what pistons they used. Mahle...

Ask them what pistons they used.

Mahle pistons run dead quiet unless there is something else wrong.

Aftermarket 2618 pistons can make some noise when cold depending on fitment.
Forum: 911 Engine Rebuilding Forum 04-02-2018, 09:12 AM
Replies: 6
Views: 418
Posted By Steve@Rennsport
The root cause is your use of ARP head studs and...

The root cause is your use of ARP head studs and I've seen a LOT more just like it since 1978.

ARP's metallurgy while very strong, doesn't match the CoE of the cylinders and thats why Porsche used...
Forum: Porsche 911 Technical Forum 04-02-2018, 09:06 AM
Replies: 36
Views: 1,265
Posted By Steve@Rennsport
These are VERY good!!!!!!!

These are VERY good!!!!!!!
Forum: Porsche 911 Technical Forum 04-01-2018, 01:12 PM
Replies: 3
Views: 245
Posted By Steve@Rennsport
No problem finding 92 octane ethanol-free gas...

No problem finding 92 octane ethanol-free gas here in PDX. :) :)

91 or 92 is far preferable to 87 or 89 in these cars. Remember, detonation thresholds vary with outside air temps (unlike...
Forum: 911 Engine Rebuilding Forum 03-29-2018, 02:49 PM
Replies: 15
Views: 1,230
Posted By Steve@Rennsport
CIS, carbs or EFI?

CIS, carbs or EFI?
Forum: 911 Engine Rebuilding Forum 03-28-2018, 12:55 PM
Replies: 15
Views: 1,230
Posted By Steve@Rennsport
Hi Jerry, Lost of options here; may I ask...

Hi Jerry,

Lost of options here; may I ask what car/engine this would be used on?
Forum: Porsche 911 Technical Forum 03-27-2018, 10:57 PM
Replies: 20
Views: 488
Posted By Steve@Rennsport
No loctite needed; just new bolts and locking...

No loctite needed; just new bolts and locking tabs.
Forum: Pacific NorthWest -US (WA/ID/OR/UT/HI/AK) 03-24-2018, 12:06 PM
Replies: 2
Views: 239
Posted By Steve@Rennsport
All I can say is that its very pretty. :)

All I can say is that its very pretty. :)
Forum: 911 Engine Rebuilding Forum 03-20-2018, 03:12 PM
Replies: 11
Views: 778
Posted By Steve@Rennsport
Mike offered some excellent general advice that...

Mike offered some excellent general advice that you cannot go wrong with.

I would add that ring seating and sealing depend on many factors that include ring material/coating, ring tension,...
Forum: 911 Engine Rebuilding Forum 03-17-2018, 04:23 AM
Replies: 4
Views: 425
Posted By Steve@Rennsport
I would talk to Jerry at CP.

I would talk to Jerry at CP.
Forum: 911 Engine Rebuilding Forum 03-14-2018, 12:47 PM
Replies: 14
Views: 883
Posted By Steve@Rennsport
Oh yes. :) :) JE & CP are fine for...

Oh yes. :) :)

JE & CP are fine for competition engines where pistons are replaced every 50-200 hours (depending on CR and max RPM's).

Jerry, call me.
Forum: 911 Engine Rebuilding Forum 03-13-2018, 06:21 AM
Replies: 14
Views: 883
Posted By Steve@Rennsport
Is this for SC or Carrera?

Is this for SC or Carrera?
Forum: 911 Engine Rebuilding Forum 03-13-2018, 06:16 AM
Replies: 2
Views: 235
Posted By Steve@Rennsport
All 993 cylinders are Nikasil. Goetze are the...

All 993 cylinders are Nikasil. Goetze are the preferred rings in street engines.
Forum: 911 Engine Rebuilding Forum 03-12-2018, 09:43 AM
Replies: 14
Views: 883
Posted By Steve@Rennsport
Euro ones or the wedge-dome (MM) ones?

Euro ones or the wedge-dome (MM) ones?
Forum: 911 Engine Rebuilding Forum 03-11-2018, 11:18 AM
Replies: 14
Views: 883
Posted By Steve@Rennsport
I can buy certain Mahle pistons by themselves;...

I can buy certain Mahle pistons by themselves; what size are you looking for?
Forum: 911 Engine Rebuilding Forum 02-25-2018, 07:57 PM
Replies: 14
Views: 764
Posted By Steve@Rennsport
We use a Jet washer and soda blasting for effect....

We use a Jet washer and soda blasting for effect. Parts look like new when done.
Forum: Porsche 911 Technical Forum 02-22-2018, 08:08 AM
Replies: 35
Views: 1,774
Posted By Steve@Rennsport
Totally agree. One question I have for the...

Totally agree.

One question I have for the OP is how long do you want the engine to last?

To me, that helps frame the choice of pistons to use.
Forum: 911 Engine Rebuilding Forum 02-19-2018, 05:32 PM
Replies: 15
Views: 785
Posted By Steve@Rennsport
Nossir, it was optional in '73-on.

Nossir, it was optional in '73-on.
Forum: Porsche 911 Technical Forum 02-16-2018, 08:13 AM
Replies: 3
Views: 256
Posted By Steve@Rennsport
It can be done using the later fan housing, but I...

It can be done using the later fan housing, but I would NOT recommend it.

Straight-blade fans flow more air and thats exactly what mag-cased engines need. Use an 11-blade 2.4-2.7 fan with the...
Forum: 911 Engine Rebuilding Forum 02-16-2018, 08:10 AM
Replies: 17
Views: 481
Posted By Steve@Rennsport
I've been using welded cams in various motors and...

I've been using welded cams in various motors and have no angst if:

1) The welding job is done properly

2) The rocker arms are properly refaced (not as easy as you think)

3) Correct break-in...
Showing results 1 to 25 of 500

 
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