Mark Strock's decompressed 6.9 IDI first test drive at R&D.

Having just completed the build the evening before, it was time to take a spin up the road and see how things felt before the 2,500 mile dash home from Seattle WA to Shippensburg Pa

[@Palimino444]

At about 4:00 you guys joked about the throttle sticking. Funny story- A few years ago I was driving my 89 F259 7.3 IDI cross country, and on some highway in Ohio late one night- I came to find my throttle return spring broke! And unfortunately mine was a C6 auto, but thankfully it slowly made it back as far as 1200RPM, and I was able to park it in a lot and discover what happened. Moral of the story- CHECK YER SPRINGS!

[@chapekfabrication2975]

I just had one do that to me. Its well worth the $50 for a new throttle cable.

[@psd28]

Just lift the pedal up with your foot

[@dieselwrench3621]

Would like to see you post more videos on this truck 👍🇺🇸

[@user-vx5gv7ig1c]

Приятно так ехать и общаться и вокруг Красота

[@conwaysdetailing387]

Love the sound of a 6.9 or 7.3 off the govenor. Lol

[@user-vx5gv7ig1c]

Классный трачек. мотор красиво работает

[@luciankristov6436]

R&D offers shaved pistons. It will drop the compression ratio to 17:1. 070 thousands removed on the 6.9 and. 040 on the 7.3 idi. . You can then run 30 PSI on arp studs and make more power with the 6.9. I was thinking of dropping my ratio to 18:1 on my 6.9 I'm rebuilding and run a gtp38 on stock waste gate settings.

[@The73idigarage]

What would the compression ratio be from a .020-.040 thousands shave

[@doxnoogle5782]

Oil pressure? Never heard of her

[@bradshaw106]

How did you lower the compression? How’s it holding up? Any starting issues with the lower compression

[@markstrock6999]

A friend of ours in the Czeck Republic made 4 sets of custom multilayer gaskets, 2 of them standard thickness, 2 sets were thicker for decompression purposes. It's setting around 18:1. It starts good in cold weather, but can take a while to warm up due to the lowered cylinder pressure dropping the heat a bit

[@dakotawheeler4133]

@@markstrock6999 any chance you can get more of those gaskets?

[@markstrock6999]

Negative. There were only 2 sets produced and they were made in Europe. The second set is in Arizona and the guy doesn't plan to use them

[@javymcdeez3958]

could you guys sit a little closer please!

[@tylersutton1048]

Found you

[@garetherrbach4988]

How much horsepower you making

[@akimbogunner9844]

What is the purpose of a decompression gasket

[@coltonburnham3528]

Akimbogunner98 allows for more boost

[@markstrock6999]

Running 30+ psi on a 6.9 to get it to keep the heads. The 7/16 fastener on the 6.9 was a blunder by IH. Even with studs a 6.9 is good to 25 psi on stock compression ratio.

[@dallashylton263]

Does this truck get up to speed quick?

[@markstrock6999]

It does pretty good, this was the first initial run after building it so I wasn't on it too hard. We had some tuning/timing to do after this as well. I have some videos after all that was done I can post as well.

[@drummerdude0314]

Fuck R&D take way to and never answer the phone or get back to you....all the parts I tried to order recently are all backed up months so don't waste your time

[@croaker4163]

Good things comes to those who wait ...

[@The73idigarage]

He does answer the phone. Sounds like ur impatient