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Search: Posts Made By: Henry Schmidt
Forum: 911 Engine Rebuilding Forum 11-22-2017, 04:44 PM
Replies: 592
Views: 100,898
Posted By Henry Schmidt
The instructions are printed in the package. ...

The instructions are printed in the package.
"apply as thinly and evenly as possible"
I interpret that to mean, coating one side is thinner than coating both.
As far as work time: I apply the...
Forum: 911 Engine Rebuilding Forum 11-22-2017, 01:47 PM
Replies: 592
Views: 100,898
Posted By Henry Schmidt
One side only as per TB instructions. ...

One side only as per TB instructions.
Cleanliness is paramount.
Apply a moderate bead and spread it evenly. I use my finger to insure that the sealant is adhering.
Forum: 911 Engine Rebuilding Forum 11-16-2017, 03:33 PM
Replies: 34
Views: 1,790
Posted By Henry Schmidt
Our experience is that Alusil when Nikasil coated...

Our experience is that Alusil when Nikasil coated is a better cylinder.
The higher silicon ration in the Alusil material is more stable at temperature.
Nikasil will bond to Alusil cylinders without...
Forum: 911 Engine Rebuilding Forum 11-15-2017, 11:56 AM
Replies: 16
Views: 543
Posted By Henry Schmidt
I've seen this particular case and the sealing...

I've seen this particular case and the sealing surface is in tact and not in need of chamfering. Some mag case definitely need work.
Forum: 911 Engine Rebuilding Forum 11-15-2017, 11:52 AM
Replies: 34
Views: 7,212
Posted By Henry Schmidt
The idea is to help seal the oil transfer hole. ...

The idea is to help seal the oil transfer hole.
If oil doesn't leak at that union, then oil will not leak at all.
If the oil leaks from the transfer hole you can have an oil pressure issue. ...
Forum: 911 Engine Rebuilding Forum 11-15-2017, 10:53 AM
Replies: 16
Views: 543
Posted By Henry Schmidt
Green Viton from Wrightwood Racing are the best...

Green Viton from Wrightwood Racing are the best we've found.
Forum: 911 Engine Rebuilding Forum 11-15-2017, 10:29 AM
Replies: 34
Views: 1,790
Posted By Henry Schmidt
As for using cast iron cylinders on a 90/92 mm...

As for using cast iron cylinders on a 90/92 mm engine: Bad Idea
Air cooled Porsches use the cylinders (fins and fan) to cool the heads.
Cast iron is a terrible heat sink when you're trying to...
Forum: 911 Engine Rebuilding Forum 11-15-2017, 08:09 AM
Replies: 34
Views: 1,790
Posted By Henry Schmidt
I no longer use or recommend QSC cylinders. Too...

I no longer use or recommend QSC cylinders. Too many quality issues. Ovality and flaking Nikasil just two of them.
I discovered a design error in one of the sets they sell and after informing them...
Forum: 911 Engine Rebuilding Forum 11-15-2017, 07:58 AM
Replies: 34
Views: 7,212
Posted By Henry Schmidt
14 years over 130 engines, zero reporting a # 8...

14 years over 130 engines, zero reporting a # 8 main leak and less than 2% reported leaks of any sort using our sealing technique.
In 1990 (the only year I have data) the factory experienced a 4%...
Forum: Off Topic Discussions 09-18-2017, 09:43 AM
Replies: 505
Views: 22,025
Posted By Henry Schmidt
Quote Verstappen : "I'm HAPPY the three of us...

Quote Verstappen : "I'm HAPPY the three of us retired not just ME......."
What a spoiled POS.
Forum: Off Topic Discussions 09-18-2017, 08:52 AM
Replies: 505
Views: 22,025
Posted By Henry Schmidt
Singapore has great optics but the racing sucks ...

Singapore has great optics but the racing sucks
It reminds me of the Delmar track back the IMSA GTP days, racing in a flood control channel.

The way to make racing more competitive might be a...
Forum: 911 Engine Rebuilding Forum 09-08-2017, 08:24 AM
Replies: 10
Views: 707
Posted By Henry Schmidt
Best bang for the buck is a stroke & bore...

Best bang for the buck is a stroke & bore conversion. The way I did my last two personal builds.
You will need a 70.4mm crank and matching rods, 84-86mm cylinders (slip-in).
Shoot for a compression...
Forum: 911 Engine Rebuilding Forum 08-25-2017, 07:18 AM
Replies: 14
Views: 746
Posted By Henry Schmidt
These head gaskets (CE rings) seal fluid not...

These head gaskets (CE rings) seal fluid not compression.
That being said you could run the engine without CE rings and never notice a problem.
I would be more concerned with the quality of the...
Forum: Porsche 911 Used Parts For Sale & Wanted 08-01-2017, 07:18 PM
Replies: 2
Views: 236
Posted By Henry Schmidt
still looking.

still looking.
Forum: 911 Engine Rebuilding Forum 07-26-2017, 03:33 PM
Replies: 22
Views: 1,251
Posted By Henry Schmidt
By using Supertec head studs you can eliminate...

By using Supertec head studs you can eliminate most of the headache associated with pin and clip installation.
Installing the pistons in the cylinder then installing the pin and clip without...
Forum: 911 Engine Rebuilding Forum 07-26-2017, 03:16 PM
Replies: 4
Views: 373
Posted By Henry Schmidt
The gaskets fit tight because the studs are a...

The gaskets fit tight because the studs are a larger diameter.
Lightly trimming the gaskets slightly will cure the issue.
Forum: 911 Engine Rebuilding Forum 07-26-2017, 11:34 AM
Replies: 22
Views: 1,251
Posted By Henry Schmidt
I use the Stromski tool but you have to use some...

I use the Stromski tool but you have to use some common sense.
Not all pin clips are created equal. Not even all the clips from Mahle.
There are various wire thicknesses in the 22mm and 23mm clips....
Forum: 911 Engine Rebuilding Forum 07-20-2017, 02:08 AM
Replies: 6
Views: 515
Posted By Henry Schmidt
Try Ken @ 911 Vintage parts for a single...

Try Ken @ 911 Vintage parts for a single replacement.
info@911vinatgeparts.com
or 911vinatgeparts@earthlink.net
http://forums.pelicanparts.com/uploads26/911_Vintage1500541662.jpg
Forum: 911 Engine Rebuilding Forum 07-15-2017, 10:36 AM
Replies: 4
Views: 290
Posted By Henry Schmidt
The 2.0-27 cylinder tin and 3.0-3.2 are different...

The 2.0-27 cylinder tin and 3.0-3.2 are different lengths. Not easily interchangeable.
The top deflector tin may add additional cooling but not much.
Forum: 911 Engine Rebuilding Forum 07-13-2017, 07:53 AM
Replies: 7
Views: 576
Posted By Henry Schmidt
They work fine Use with hot soap and water (no...

They work fine
Use with hot soap and water (no other lubricant) and turn it slowly (500rpm or less).
Forum: 911 Engine Rebuilding Forum 07-11-2017, 08:01 AM
Replies: 7
Views: 505
Posted By Henry Schmidt
Jetting is a "black art" that requires a plethora...

Jetting is a "black art" that requires a plethora of baseline decision.
Altitude
compression
cams
port size
exhaust (both primary size and muffler back pressure.)
ignition
desired red line...
Forum: 911 Engine Rebuilding Forum 07-07-2017, 09:23 PM
Replies: 6
Views: 616
Posted By Henry Schmidt
Two quick comments: The theoretical compression...

Two quick comments:
The theoretical compression ratios publish by Porsche in the early engines is grossly over stated.
Second, be careful with mild cams like 911E with genuinely higher compression...
Forum: 911 Engine Rebuilding Forum 06-18-2017, 08:29 AM
Replies: 8
Views: 764
Posted By Henry Schmidt
Check with Ken @ 911 Vintage Parts. He has a huge...

Check with Ken @ 911 Vintage Parts. He has a huge selection of individual rings on the self.
911vintageparts@earthlink.net
info@911vintageparts.com
or 760-731-4911
Forum: 911 Engine Rebuilding Forum 06-16-2017, 08:30 AM
Replies: 11
Views: 780
Posted By Henry Schmidt
You could be right but I believe the differing...

You could be right but I believe the differing cylinder expansion from top to bottom is controlled by the cooling fin lengths. It wasn't until the short skirts employed by the 3.6 (100mm) pistons...
Forum: 911 Engine Rebuilding Forum 06-15-2017, 09:01 AM
Replies: 11
Views: 780
Posted By Henry Schmidt
I have no real opinion about the noise you're...

I have no real opinion about the noise you're experiencing but the design of the 3.6 (100mm) piston is prone to piston slap. (very short skirt)
In an attempt to control this phenomenon, Mahle...
Showing results 1 to 25 of 500

 
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