Hey guys,I'm new here
I have a question about what lifters do you use in engines? He builds a 500-600HP engine. I would like to get a higher rpm. OEM lifters are heavy ... They are selling aftermarket puredieselpower.com lifters, but they are very expensive !!! Is it worth buying them?
thanks for the opinion

Stock Duramax lifters never seem to wear out or fail under reasonable use. Since they are a "solid" lifter, only parts that could fail is the roller tip needle bearings. And I've personally never seen one with a worn out roller. But did forget a full set outside in a bucket for a month, that trashed em..

Unless your looking to spin 6k R's, or run some crazy cam profile, I wouldn't spend the extra money on aftermarket lifters. Just clean em up and check that all the rollers are smooth. As you mentioned, there is almost no aftermarket options out there. So that right there should tell ya something.

-K

thanks for the info, I think there is only one company. And what do you think about the Harland Sharp Roller Rocker Arms. They are lightweight rollers but they are expensive ... would you invest in it? My engine has a long life, I used camshaft alternative firing, mahle pistons, fluiddamper, etc ....

Thanks,

Once again, only if trying to spin some serous RPM's. The common upgrade for Duramax rockers, replace the 5 rail bolts with ARP. Then spend the extra money on a decent set of push rods. You'll be good to a 1000hp...

Finally got some builds caught up to this thread. Been hard at work, helping several members get their marinized engines fired up this spring.

Here is the two I've been most waiting to hear run for over a year now. Both fired right up, and are being prepped for some time on the dyno next month. Maybe even bolt some turbos on em..

makes me tingle in my special place

Anymore information on setting up gauges or getting it into a chartplotter display?

Depending on the model year platform you chose, I have a gateway unit that converts GM CANbus data into N2k protocol for all chart plotters and VantageView gauges. Provides ya main gauges like temps, boost, rpm and oil pressure. It's a plug-N-play setup that only requires two wires from the engine to helm.

Getting Back On Tack

Just finished a month long dyno testing session on the pair of T-1000 marinised Duramax engines I posted video of above back in April. These engines are the conclusion of all the posts above. Goal being to see if these 403ci V8 engine can live happily making over two horsepower per cubic inch within a marine application, using the best hardware available today. This includes testing those beautiful Banks marine intakes, that I have yet to see pictured in a boat. I'm glad to say, the results look very promising.

Also have updates on cooling system options, along with some strange quarks we ran into during testing to share. For now here's some data and video from our testing sessions.