Re: 2008 rules changes!
 

If rivets are installed properly, they do not fall off...if that was the case, airplanes would be falling off the sky everyday...:)

Re: 2008 rules changes!
 

actually they loose rivets too...but not as many so they fall apart!

Re: 2008 rules changes!
 

I guess anything to make the CO2 less of an issue, but I am not sure how these small gen sets are going to affix a stack on them yet? I wish they would have added a db max on them though. How many times have you had some a hole buy the biggest Craftsman generator with a 12 hp briggs and no muffler along with a 500 ft extension cord. Oh yeah, they can't buy a good muffler for it, but they spring for the wheel kit so they can park it next to your pit area! LOL>

Re: 2008 rules changes!
 

We pick up more Dzus fasteners and tools than anything else every week.....still can't understand the timing pointer thing.


Riddle me this Batmen:
If you add an oil accumulator, and it "activates", where does the oil to re-fill it come from? (this is a rhetorical question)

Seems to me to be a zero gain deal.....you either starve it during the operation, or after, but any oil flowing from a wet sump pump is diverted to re-fill the accumulator anyway, seems like a waste of time/dollars for anything other than pre-priming the engine on startup.

How do you get the oil in the accumulator up to operating temperature?

I ran a stocker type pan with zero oil pressure in shutdown for years, and never scuffed a bearing. :confused: Just lucky I guess? Of course, I let my stuff run pretty well flooded with oil, in regards to pump volume, clearances, and metering, not the way I'd run a class engine for HP.

Re: 2008 rules changes!
 

This is from the Accesump site:

"On initial start-up when the valve on the oil side is opened the pressurized oil is released into the engine and therefore pre-lubricating the engine prior to start-up.

The Accusump holds whatever oil pressure the engine has at the time that it is shut off.

After the engine is started and the oil pump has taken over, oil is pumped back into the Accusump.

This moves the piston back and pressurizes the Accusump until it equalizes with engine's oil pressure.

While driving, if the engine's oil pressure is interrupted for any reason, the Accusump releases its oil reserve again, keeping the engine lubricated until the engine's oil pressure comes back to normal.

This release of oil could last from 15 to 60 seconds, depending on the size and speed of the engine.

In racing or hard driving conditions, the Accusump will automatically fill and discharge when needed as you corner, accelerate and brake."

Re: 2008 rules changes!
 

In regards to the accusump deal, it is a good safety investment no different than wheelie bars. I have one on my super stocker and in Fontana this year I came down out of the wheelstand and crushed the oil pan into the pickup thus starving the engine for oil. It wasn't a violent wheelstand, so I didn't realize this had happened. The accusump was pumping whatever oil was in it to help so the engine wasn't starved as I went the rest of the way down the track. Yes I did burn up a couple of bearings, but without the accusump I most likely would have blown up the entire motor. It was kind of cool to watch it on the racepak as you can literally see the accusump trying to make up for the lost engine oil pressure. So, this is nothing but a positive precautionary opportunity and if you don't think it's worth it, don't put one on. I do not believe it says mandatory anywhere in the rule revision.

Re: 2008 rules changes!
 

My new 2008 rule book arrived today. .....Everything outlined on the Div5 site is correct according to the rule book. .......The valve job example that has been in the general regulation section since forever is gone!!........................It seems they will need to be more specific about the generator stack requirement,it reads pretty much the same, very vague,not specifically mentioning portable units as opposed to permantly mounted. ..........The TDC pointer /pin is under section 8:3 and does not elaborate or specify classes affected or type of pointer...........Tom

Re: 2008 rules changes!
 

2 step in IHRA stock still legal??

Re: 2008 rules changes!
 

Pointer shown in picture from Bob Gullett 12/05/07 regardless of brand... if this is what NHRA is wanting to be pinned, ok I'll play. Today we took the first of many pointers from one of the engines in the shop for freshining and upon trying to remove the pin from the body of the adjustable piece we found the pin to have a nail head so as it can't slip out... we checked a few more and found the same thing... guess the people that developed these figured out that aluminum grows more than steel at the same temp and made it so it wouldn't slip out. Hope someone will point this out to the managment as they don't listen to me. For now ours will look pinned even tho it's useless

Re: 2008 rules changes!
 

I did the same on my engine. Took 5 minutes to drill it and install a roll pin. Mine was an ATI and I guarantee it was impossible for it to have fallen out.