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Search: Posts Made By: Bill Verburg
Forum: Porsche 911 Technical Forum Yesterday, 11:51 AM
Replies: 2
Views: 115
Posted By Bill Verburg
yes, w/ some caveats. The 6x15 Fuch was on most...

yes, w/ some caveats. The 6x15 Fuch was on most US 911s but it was also an option on most of them. There were also 5.5x14 Fuchs, 5.5x15 Fuchs and 5.5 & 6 x15 steel

It was possible to replace 2...
Forum: Porsche 911 Technical Forum 11-20-2019, 02:51 PM
Replies: 209
Views: 16,097
Posted By Bill Verburg
No, Cherry bomb use a perforated core wrapped w/...

No, Cherry bomb use a perforated core wrapped w/ f/g or steel wool or some similar product

Here's what they do / Flowmasters to reinforce the acoustic signal...
Forum: Porsche 911 Technical Forum 11-20-2019, 01:10 PM
Replies: 209
Views: 16,097
Posted By Bill Verburg
While I think that Rarely's headers are a great...

While I think that Rarely's headers are a great product you have to remember that w/ a muffler on the end of them most of the acoustic tuning benefits go away.

There are 2 main parts to exhaust...
Forum: Porsche 911 Technical Forum 11-20-2019, 10:45 AM
Replies: 13
Views: 415
Posted By Bill Verburg
That's normal bothe t-stat's open at ~182-189F...

That's normal bothe t-stat's open at ~182-189F the temp rise curve normally looks like this

http://forums.pelicanparts.com/uploads26/oiltemrise1516205921.gif

The first plateau is the engine...
Forum: Porsche 911 Technical Forum 11-19-2019, 02:58 PM
Replies: 13
Views: 415
Posted By Bill Verburg
Don't confuse heat w/ temperature While more...

Don't confuse heat w/ temperature

While more heat will be added to the oil's thermal load there will only be a temperature rise to the extent that the capacity of the cooling is exceeded, If it's...
Forum: Porsche 911 Technical Forum 11-18-2019, 12:17 PM
Replies: 9
Views: 471
Posted By Bill Verburg
All US SC have catalytic converters, the cats...

All US SC have catalytic converters, the cats become more sophisticated 3 way cats in 1980. These can be id'd by the O sensor just before the cat inlet and separate control computer under the...
Forum: Porsche 911 Technical Forum 11-17-2019, 12:31 PM
Replies: 76
Views: 21,438
Posted By Bill Verburg
They are not a necessity but are very desirable,...

They are not a necessity but are very desirable, you want to get the most torque from the rear that you can, the '78-89 930 rears help to accomplish that goal. It's not a real big deal to open the...
Forum: Porsche 964 & 993 Technical Forum 11-17-2019, 11:14 AM
Replies: 2
Views: 275
Posted By Bill Verburg
They appear to be Mode

They appear to be Mode
Forum: Porsche 911 Technical Forum 11-17-2019, 11:12 AM
Replies: 76
Views: 21,438
Posted By Bill Verburg
VCI, don't forget you will need 930 sized...

VCI, don't forget you will need 930 sized 304x32mm rotors w/ a flat hat and the caliper adapter o/s need to match the rotor o/s VCI can supply these too.

also don't forget to do the back w/ 993...
Forum: Porsche 911 Technical Forum 11-16-2019, 11:07 AM
Replies: 76
Views: 21,438
Posted By Bill Verburg
In that case you should know that the 964 front...

In that case you should know that the 964 front caliper wants a 28mm rotor, min rotor is 24, w/ a 24 you are starting at at the min. wear limit, not good.

I'd use either C 3.2 fronts and you...
Forum: Porsche 911 Technical Forum 11-15-2019, 10:16 AM
Replies: 76
Views: 21,438
Posted By Bill Verburg
Where are you getting 282x28 front rotors?

Where are you getting 282x28 front rotors?
Forum: Porsche 911 Technical Forum 11-15-2019, 10:14 AM
Replies: 76
Views: 21,438
Posted By Bill Verburg
OMG!! That is an oldie, I didn't know it was...

OMG!! That is an oldie, I didn't know it was still around, I put it up such a long time ago
Forum: Porsche 911 Technical Forum 11-14-2019, 02:46 PM
Replies: 76
Views: 21,438
Posted By Bill Verburg
964t brakes to a 911 is fairly easy, the brake...

964t brakes to a 911 is fairly easy, the brake bias gets moved more front than I prefer but not as much w/ as much negative side effects as w/ some others
In front you use 993 2 piece rotors, these...
Forum: Porsche 911 Technical Forum 11-14-2019, 11:22 AM
Replies: 8
Views: 404
Posted By Bill Verburg
The flares used on Carrera from 'sometime in '74...

The flares used on Carrera from 'sometime in '74 or '75 up are the same, the '73 RS through at least some of the early '74 Carreras had a subtly different shape. There is a thread from years ago w/...
Forum: Porsche 964 & 993 Technical Forum 11-13-2019, 11:01 AM
Replies: 4
Views: 436
Posted By Bill Verburg
It must be a custom setup, 330x32 is a common...

It must be a custom setup, 330x32 is a common size and hats can be made to spec. Never sen that particular setup though.

Does it still have the stock calipers?

Probably not Brembo as theirs...
Forum: Porsche 964 & 993 Technical Forum 11-12-2019, 11:50 AM
Replies: 4
Views: 436
Posted By Bill Verburg
That appears to be a 993tt front rotor/hat...

That appears to be a 993tt front rotor/hat assembly. If so it would measure 322x32mm. It also appears to be a stock 964RS/Cup/t front wheel carrier

A stock 964Cup would also have had a 322x32...
Forum: Porsche 911 Technical Forum 11-04-2019, 05:54 PM
Replies: 4
Views: 426
Posted By Bill Verburg
Not sure what you are looking for here's the...

Not sure what you are looking for

here's the specs, You'll want to be somewhere between them, left is stock RoW street and right is full race
...
Forum: Porsche 911 Technical Forum 11-03-2019, 12:37 PM
Replies: 34
Views: 819
Posted By Bill Verburg
Shorter tubes are used at higher rpm, longer...

Shorter tubes are used at higher rpm, longer tubes at lower rpm, for the typical stockish 911 ~31" seems to be the most common, from extensive dyno test it's not really critical that the tubes be...
Forum: Porsche 911 Technical Forum 11-02-2019, 04:01 PM
Replies: 34
Views: 819
Posted By Bill Verburg
964RSR & 993RSR and 993Cup used a similar design...

964RSR & 993RSR and 993Cup used a similar design to stripped street 993 headers

Here's a pic of 964RSR which was also used on early 993RSR, there were 2 sizes 42mm & 44.45mm 993Cup used 39mm of...
Forum: Porsche 911 Technical Forum 11-01-2019, 04:52 PM
Replies: 34
Views: 819
Posted By Bill Verburg
I came across this from back in the day when I...

I came across this from back in the day when I raced bikes, it shows the details the factories incorporate in their designs to tune the pipes for one quality or another...
Forum: Porsche 911 Technical Forum 11-01-2019, 04:44 PM
Replies: 34
Views: 819
Posted By Bill Verburg
The thing is that when you have an open exhaust...

The thing is that when you have an open exhaust all the design details like equal length, proper merges, appropriate length, proper collectors, careful transitions etc are very important to making...
Forum: Porsche 911 Technical Forum 11-01-2019, 12:10 PM
Replies: 34
Views: 819
Posted By Bill Verburg
It's best to avoid steps, If the collector exit...

It's best to avoid steps, If the collector exit is 2.5" then stay 2.5 all the way out. But keep in mind that any thing that happens after the muffler has little effect upstream as long as it's not...
Forum: Porsche 911 Technical Forum 10-31-2019, 12:26 PM
Replies: 34
Views: 819
Posted By Bill Verburg
That's to each collector, total is 325 pulses/s,...

That's to each collector, total is 325 pulses/s, so the frequency of that is 325Hz
http://forums.pelicanparts.com/uploads26/L_R_connected1572549850.jpg...
Forum: Porsche 911 Technical Forum 10-31-2019, 10:52 AM
Replies: 34
Views: 819
Posted By Bill Verburg
I just love it when my work is posted w/o...

I just love it when my work is posted w/o attribution

Here's the amended version
http://forums.pelicanparts.com/uploads26/flow21572542281.gif

Acoustic tuning effects are largely absent when a...
Forum: Porsche 911 Technical Forum 10-30-2019, 11:42 AM
Replies: 32
Views: 2,525
Posted By Bill Verburg
They look great, you should offer the option to...

They look great, you should offer the option to use other spacing for the mufflers inputs
Showing results 1 to 25 of 500

 
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