r/engines

recently built. 351w i did new heads 1.7 rockers long tube headers and it runs nice at least i thought. cylinder 4 and 5 are straight cold headers still painted. firing order is correct 1-3-7-2-6-5-4-8 got a new distributor cap and rotor nope made sure the wires weren’t touching any others didnt make a difference, there is spark at the plug and the distributor and there is also fuel in the cylinders. all plugs and wires are new i swapped the plug with a known good one and nothing i have 150 psi compression on cylinder 5 didnt check 4 yet i ran it for a minute with plugs in and the fuel seemed to not disappear. yet again i checked spark and firing order at the cap again and even went back and re adjusted #5 at tdc compression. injectors are firing spark is sparking and #5 has compression. anyone have an ideas or suggestions?

This is not a rocket bike.

The engine uses concentrated hydrogen peroxide decomposed in a chemical reactor to generate high-pressure steam and oxygen, which drive a homemade turbine connected to the wheel.

What started as homemade Unimoto ice racing eventually evolved into one of the strangest machines I have ever built.

This video tells the complete story:

garage experiments, steam engines, failed steering systems, frozen catalysts, turbine testing, Soviet motorcycles, and the engineering madness of the Snowdogs winter motorcycle festival.

The video is in Russian with full English subtitles.

Do NOT repeat anything shown in this video.

So I have a 2019 Ram 1500 limited. Last year my air suspension failed on the truck and costs me about 7k to fix at the dealer. Recently the hemi tick got me, so I need a new engine and intake manifold, and mufflers. Got quoted 15k at the dealer. If the engine is replaced is it possible it will have the same tick?

so today was heavy rain and my dumb self forgot to cover my air intake (Corsa) and as i was driving the engine cut off on me and about 5 mins later i was able to get it back running i was able drive home but like i felt the intake rumbling no light or nothing is on

Ford 4.9 300 CID short block 

PROMAXX Ford 300 Inline-6 CNC Ported Cylinder Head

SCAT Ford 300 Forged Rotating Assembly crank, rods, pistons, rings etc

Comp Cams High Energy 218/218 Hydraulic Flat Cam

Harland Sharp Original Roller Rockers

Offenhauser C Series Intake Manifold

Hooker Super Competition Headers 6823HKR

Duralast Engine Water Pump

Speed pro Hypereutectic Pistons H519P

Duralast Engine Water Pump CWP-129

Fel-Pro Performance Head Gaskets 1024

Performance JM6528BL HEI Distributor, Ford Inline 6  (240, 300), Blue top

Ford 240/300 L6 HEI Distributor red top SKU: JM6528R 

Comp cams Gear Set for '65-'91 Ford 240-300 V6 with Steel Gears

durabond ford 300 cam bearings

Melling High-Volume Oil Pumps M-74HV

Melling Oil Pump Pickup Tube And Screen - 74S2

COMP Cams High Energy Hydraulic Lifters 832-12

NGK V-Power Spark Plugs WR5 x6

MSD 8.5mm Super Conductor Spark Plug Wire Sets 31179

msd ignition control box

Holley Street Warrior 600 CFM 4-Barrel Carburetor 0-80457S

MR. GASKET PHENOLIC CARBURETOR SPACER - 1 INCH - 4 HOLE CENTER

Carter Street Super Mechanical Fuel Pumps M6901

K&N Air Filter Round 14"X4"

Air Filter housing

I’m trying to get a Ruggerini RM90 single cylinder diesel running, but it refuses to start and I’m running out of ideas.

What I already checked/did:

- Clean fresh diesel
- New fully charged battery
- Engine cranks strongly
- Injector was rebuilt by a diesel specialist
- New injector needle installed
- Injector opening pressure adjusted/tested by specialist
- Fuel system fully bled
- No more air bubbles visible in the return line
- When I disconnect the injector, I can see fuel pulsing from the high pressure line while cranking
- White smoke while cranking
- Engine occasionally makes “popping” sounds like it wants to start
- If I remove the oil filler cap, I can feel air/blow-by coming from the crankcase while cranking

What confuses me:
- Spraying brake cleaner into the intake gives absolutely NO reaction at all
- Not even a small increase in firing

Decompression lever appears to function normally and returns correctly.

What else should I check?
Could this still be:
- low compression?
- valve clearance?
- injection timing?
- injector pump issue?
- sticking valve?

Why would it still not start even with brake cleaner?

Any advice from people familiar with Ruggerini/Lombardini diesels would really help.

Just need your thoughts........