RB26 FULL ENGINE BUILD: Episode 15: ARP Head Studs, Cam Seals, Tomei Cam Gears & Timing Belt
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- Опубліковано 8 лют 2025
- Welcome to Episode 15 of the RB26 Full Engine Build! In this video Colton installs the head onto the block giving us our first look at the complete engine! He then torques down the ARP Head Studs, Installs the cam seals, tomei cam gears and does some modifications to allow for some more timing components.
Comment down below if you have any questions!
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Some Components Used in this video!
ARP Head Studs
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RB Timing Belt Kit
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Tomei Cam Stud kit
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RB Cam seals
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Tomei Timing Belt
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Tomei Cam Gears
IN - www.boostfacto...
EX - www.boostfacto...
2:19 for this part, the cylinders are placed before TDC, so before the timing mark. Is that correct? I’m about to do the same. Once the head is installed, is the crank rotated to the timing mark and the cams installed? Or first cams installed and then crank rotated to TDC?
yes correct, crank position a little before tdc, install the head and cams, rotate cams to tdc, then turn crank to tdc. this ensures no accidental damage.
@@boost.factory it’s done. How should I go about getting oil circulating prior to first start? Unplug ignition system, disable injectors and turn the engine over? Or remove the spark plugs and turn the engine over?
@@BourneThisWay Yes exactly, you are correct! Here is our first start up guide line!
drive.google.com/file/d/13BBwn-SchhZx5NqXVenzvpu08-7W99zJ/view
7:03 - what psi do you use for leak down?
15:33 - where did yall get the black tomei timing belt? I’ve only seen the blue ones.
leak down psi i believe is around 20psi, more pressure usually yields the same or better results. an engine that seals well under low psi will do better generally with more in operation.
the tomei belts we have on our website. they are the tomei Japan Belts!
I had a some scoring on one of my cam journal and cam, bad enough that it can be felt with the skin of your finger. How repairable is that? Or does it require a new head.
with out seeing what the scoring looks like it is tough to say, some minor scoring can be smoothed out and be ok. id be more concerned with what debris caused the damage. if you have been able to removed all oil plugs to clean the head, the journal can be cleaned up with some light sanding.
@@boost.factory when I inspected it, I noticed the cam caps 3 and 6 were mixed up, and the last cam cap 7 wasn’t entirely bolted down. As a result, the cam was hard to turn, the timing belt jumped several teeth, and pistons hit the intake valves. Only the sixth cam cap journal sustained damage though. If I had to describe how the scratches felt, it’s not like a slight abrasion. You can feel the individual ridges. I don’t think it was caused by debris.