Let's Talk Timing Maps

[Chris@Rvengeperformance]

Excellent post sir... This post comes right out of EFI University Manual. I took a picture of the graph and attempted to have a discussion a few years ago regarding timing maps and was superinflamo'd from guys that say you need a head lift fix... We're building 1000+hp engines (uncorrected familyguy) in Denver without pinned heads because of this little chart right here. UPPCOS is pushing 1200bhp on his Meth/Eth engine build on stock heads/cams with Aermet ARP hardware. I'm now at 800. No O-rings or Compression rods... just bolts.

When you pass MBT all you create is excess cylinder pressure at the same hp and you pound your bearings flat.

? You spent a few days arguing with us that bearings don't get pounded flat.

[J. Fast]

? You spent a few days arguing with us that bearings don't get pounded flat.

I never said that. My opinion, if one was to pound bearings flat then they're using the wrong load range bearing, the engine balance is off, engine misfires occurred, or the journals have been oil starved.

I also showed how to calculate the engine load at the rod pin, piston crown, main bearing, and rod bearings (long hand) illustrating one can evaluate the stress levels and limitations of their engine components instead of guessing and just tossing stuff in there.

We see a lot of taking it apart 10,000 miles later and finding a component was used beyond its load carrying capability, flat bearings, elongated rod pin bosses, underthreaded fasteners based on holding requirement. All things one can evaluate and asses before turning the key.

There is professional training and scholarly application. A build sheet and plan helps a lot. You can evaluate the anticipated engine loads at varying degrees of ignition advance at variable afr's and power outputs. It's called SAE Engine Analysis and Engine Blueprinting.

Cheap insurance policy... since 2009 has helped me select the right components, and prevents me from doing shit twice and blowing engines. Engine Analyzer Pro

[familyMAN]

UPPCOS is pushing 1200bhp on his Meth/Eth engine build on stock heads/cams with Aermet ARP hardware. I'm now at 800. No O-rings or Compression rods... just bolts.

Can you post your 800 uncorrected chart? Just last week you posted 7xx corrected, 590 uncorrected. That's a big jump and would definitely be a feat at your altitude.

Bump.

[Chris@Rvengeperformance]

Where are any charts? I think I need a video that pans to the dyno screen to believe it anyway.



Sent from my RM-845_nam_vzw_100 using Tapatalk

[familyMAN]

Bump.

[Jimvr4]

At the risk of being laughed out by all you high HP folks I humbly submit my 91 pump timing map This is what I will be tuning with this weekend and hopefully getting a chance to push the car into different areas of the map and turn up the boost a bit.

Attachment 6519

[J. Fast]

Nice, very nice Mr. Jim! I see you did some 3-D graphing. Really helps with timing map smoothing. What software are you graphing with?

[Jimvr4]

It's a built in feature in Excel. I just cut and pasted from Chrome and 3D plotted it. It really does help to get a visual.

[familyMAN]

We're building 1000+hp engines (uncorrected familyguy) in Denver without pinned heads because of this little chart right here. UPPCOS is pushing 1200bhp on his Meth/Eth engine build on stock heads/cams with Aermet ARP hardware. I'm now at 800. No O-rings or Compression rods... just bolts.

Can you post your 800 uncorrected chart? Just last week you posted 7xx corrected, 590 uncorrected. That's a big jump and would definitely be a feat at your altitude.

Nice, very nice Mr. Jim! I see you did some 3-D graphing. Really helps with timing map smoothing. What software are you graphing with?

You're back, but where's the 800 uncorrected graph?

[J. Fast]

You're back, but where's the 800 uncorrected graph?

It finally dawned on me that discussion with you is a waste of my time. Once I figured out who you were and learned and read about your historical path and outcomes I realized it's you who's the fool... not me. Look at your outcomes. Popped motor in 2012, 2nd popped motor less than a year later, now you've been reduced to de-modding because you're an idiot.

Quit patronizing me and move along. Go into your garage and turn your ignition key and let me know what the outcome is.

This thread is about timing maps and experience. You have nothing constructive, illustrative, or scholarly of your own to share other than a long list of parts you destroyed and paths that no one wants to go down so stfu and move along.