Search found 1055 matches

by brian
August 28th, 2016, 6:41 pm
Forum: Tech Tips, Rules, and Safety
Topic: Engine oil Viscosity
Replies: 37
Views: 25113

Re: Engine oil Viscosity

Brian, trying to talk to you is worse than herding cats. My last try, honest! "What are you talking about? What does this have to do with using low viscosity oil? Are you implying that a .0015 run out case is the best you can do? Is the design of the lubrication system limit by poor case preparation...
by brian
August 27th, 2016, 7:39 pm
Forum: Tech Tips, Rules, and Safety
Topic: Engine oil Viscosity
Replies: 37
Views: 25113

Re: Engine oil Viscosity

Now my head hurts. It's amazing that years of study and experience across the industry suddenly become myth. Yes OEM has gone to thinner oil; mostly to improve mileage and they are able to do so with modern machining and control. Try that on a nearly 60 year old engine design. Don't go racing withou...
by brian
August 25th, 2016, 6:03 pm
Forum: Tech Tips, Rules, and Safety
Topic: Engine oil Viscosity
Replies: 37
Views: 25113

Re: Engine oil Viscosity

Crank Spec clearance is about .0014 new. It can range up to .0032 if both components are at max wear. History tells me that our cranks really flex at high rpm. Especially in the middle. One touch between crank and bearing means damage. We began to use larger clearances to avoid touches. Synthetic oi...
by brian
August 20th, 2016, 2:01 pm
Forum: Tech Tips, Rules, and Safety
Topic: FV Intake Manifold Rules Clarification July 2016
Replies: 23
Views: 18128

Re: FV Intake Manifold Rules Clarification July 2016

Hang on folks the revised AD Hoc committee will have greater authority than ever before and will have access to all the letters. Get your pens out. My hat's off to the old committee and all the work they have done for us. Now's the next stage.
by brian
August 9th, 2016, 7:49 pm
Forum: Tech Tips, Rules, and Safety
Topic: FV Intake Manifold Rules Clarification July 2016
Replies: 23
Views: 18128

Re: FV Intake Manifold Rules Clarification July 2016

Im afraid that will just cause another round of R&D and maybe even better must have manifolds.
by brian
August 6th, 2016, 10:47 am
Forum: Tech Tips, Rules, and Safety
Topic: FV Intake Manifold Rules Clarification July 2016
Replies: 23
Views: 18128

Re: FV Intake Manifold Rules Clarification July 2016

The ID of the manifold is what effects flow. The larger the id, the more flow you get. You can etch to the weight and ball size to OD limits and accept the id that you have achieved. If one ball sizes a stock manifold to the largest id possible and you'll find the manifold od too large to fit the ru...
by brian
August 5th, 2016, 9:06 pm
Forum: Tech Tips, Rules, and Safety
Topic: FV Intake Manifold Rules Clarification July 2016
Replies: 23
Views: 18128

Re: FV Intake Manifold Rules Clarification July 2016

I don't really know why that provision was included but would imagine that making these manifolds any thinner would be a fire hazard. They crack very easily and that can lead to a disaster. Acid dipping is a very volatile and difficult to control. Some makers prefer to size up then thin the outside ...
by brian
August 3rd, 2016, 3:08 pm
Forum: Tech Tips, Rules, and Safety
Topic: FV Intake Manifold Rules Clarification July 2016
Replies: 23
Views: 18128

Re: FV Intake Manifold Rules Clarification July 2016

So little time, so many issues. Bruce, you're rehashing a 6 year old argument. What's done is done. Let's move on. Our vendors get involved because competitors call them and complain. The only viable solution to stop non compliant parts is for competitors to protest. If they're in doubt, they need t...
by brian
August 1st, 2016, 3:04 pm
Forum: Tech Tips, Rules, and Safety
Topic: FV Intake Manifold Rules Clarification July 2016
Replies: 23
Views: 18128

Re: FV Intake Manifold Rules Clarification July 2016

This class has embarrassed itself in front of the CRB and club for long enough. This class survived for decades without manifold issues until the modifiers decided to read the rules differently. Done in secret for a couple of years, one group of racers lead most fields. Others, having learned they h...
by brian
June 27th, 2016, 11:26 am
Forum: Committee News
Topic: FV advisory committee
Replies: 1
Views: 1498

Re: FV advisory committee

Noticed there were 3 resume's sent in. Come on keyboard commandos, this is your chance to actually do something for the class.
by brian
June 20th, 2016, 2:12 pm
Forum: General Discussion
Topic: Brian Jennerjahn Passed Away Today
Replies: 5
Views: 2920

Re: Brian Jennerjahn Passed Away Today

So sorry to hear, it was a pleasure knowing and racing with him/
by brian
June 20th, 2016, 1:41 pm
Forum: Committee News
Topic: FV advisory committee
Replies: 1
Views: 1498

FV advisory committee

The following is a response to a letter from Bruce Livermore regarding the ad hoc committee: 1. #19573 (Bruce Livermore) FV Ad Hoc Committee Request for More Direct Interaction with SCCA Thank you for your letter. The CRB recommends forming an official Ad Hoc Committee for Formula Vee to address spe...
by brian
June 12th, 2016, 3:23 pm
Forum: Tech Tips, Rules, and Safety
Topic: Engine oil Viscosity
Replies: 37
Views: 25113

Re: Engine oil Viscosity

Lots of great posts and I agree with almost everything. Current research has begun to identify oil flow as being more important than oil pressure in preventing bearing damage. This study assumes film strengths achieved by synthetic oils. Organic based oils have less film strength given the same visc...
by brian
May 9th, 2016, 6:50 pm
Forum: General Discussion
Topic: Machined Valve Guide Bosses
Replies: 38
Views: 23018

Re: Machined Valve Guide Bosses

I believe the intent is to stop the trend to tiny expensive springs before it starts. Rather than disqualify a bunch of heads based on inconclusive info, setting a minimum spec for the id of the spring will take the incentive to machine the bosses away. Some may argue that it will require more expen...
by brian
May 8th, 2016, 4:55 pm
Forum: General Discussion
Topic: Un-techable
Replies: 1
Views: 1448

Re: Un-techable

In the absence of definitive dimensions it is virtually impossible to consider a part non compliant. On several occasions, the ad hoc committee has provided dimensions to the CRB where non existed or were incomplete. Their work was based on researching and measuring several components and arriving a...
by brian
April 19th, 2016, 1:52 pm
Forum: General Discussion
Topic: EPA
Replies: 0
Views: 1048

EPA

While the previous ruling didn't really apply to our class, I have learned this week that the EPA has rescinded the ruling regarding modification of street cars for competition. SCCA through ACCUS and other organizations like SEMA have pursued this issue and got it changed. Here's the link:https://w...
by brian
April 14th, 2016, 1:39 pm
Forum: General Discussion
Topic: Machined Valve Guide Bosses
Replies: 38
Views: 23018

Re: Machined Valve Guide Bosses

As a competitor and scrutineer, I own and have relied on Frank's book. He also was a FF expert. His book is a bit dated since it's quite old and rules have changed. Like Brian stated, it has a lot of procedural inspection steps that are still valid and I use them at the track and in the shop. Just a...
by brian
April 4th, 2016, 1:11 pm
Forum: Tech Tips, Rules, and Safety
Topic: Spindle Checking device
Replies: 5
Views: 3632

Re: Spindle Checking device

Nice piece, what's the cost for making a compliment? :P
by brian
March 5th, 2016, 2:24 am
Forum: Tech Tips, Rules, and Safety
Topic: Attaching speed sensor pickup
Replies: 7
Views: 4514

Re: Attaching speed sensor pickup

There are magnets mounted in a threaded sleve. 10/24 I think. Drill and tap the drum and align the sensor in the backing plate. I use a spot inside the shoes and mount the magnet on a web brace of the drum.
by brian
February 29th, 2016, 6:07 pm
Forum: Committee News
Topic: January Committee Minutes
Replies: 25
Views: 16383

Re: January Committee Minutes

The heads with the VW logo removed were made after the molds were shipped from Germany to Mexico and VW wantd to be able to distinguish which heads were made by the German factory and those that were not. MIke, Stephan was my source and now that he has made that public, I have no reason to withhold ...
by brian
February 27th, 2016, 2:36 pm
Forum: Novice Area
Topic: Brake shoes
Replies: 75
Views: 38162

Re: Brake shoes

Since the angled adjusters do move the shoes fore and aft, sometimes you'll hear a bit of drag but nothing significant. Tap the pedal and it will usually go away. Some folks use two springs on the adjuster end to pull the shoe back down the slope of the adjuster. Using super aggressive compounds on ...
by brian
February 18th, 2016, 5:03 pm
Forum: Tech Tips, Rules, and Safety
Topic: Carbotech brake shoes
Replies: 5
Views: 3629

Re: Carbotech brake shoes

I could not find any info on brake shoes. This web site is all disc pads
by brian
February 17th, 2016, 7:07 pm
Forum: Tech Tips, Rules, and Safety
Topic: Carbotech brake shoes
Replies: 5
Views: 3629

Re: Carbotech brake shoes

Carbo techs are more expensive, less drum friendly and take more work to make work right, but they do stop better. It's your call.
by brian
February 14th, 2016, 5:06 pm
Forum: Committee News
Topic: January Committee Minutes
Replies: 25
Views: 16383

Re: January Committee Minutes

For everyone else following this conversation, our heads were cast in two halves. A very common process even today. The heads were cast using a two half sand mold. As the run progresses, the two halves tend to move side ways relative to one another. This is commonly known as core shift. It still exi...
by brian
February 13th, 2016, 4:06 pm
Forum: Committee News
Topic: January Committee Minutes
Replies: 25
Views: 16383

Re: January Committee Minutes

Mike, I agree with you regarding Citation mods but just didn't want to cloud this issue with that discussion. Besides, my parents told me many times, " just because someone else does something, doesn't mean you can." One of the reasons you see variances in the center line of the guide bosses is due ...