Sammit: please don't give problems the SR20: I DONT WANT PEACE I WANT PROBLEMS ALWAYS

Man I remember you assembling this block so meticulously and being so hyped to see it rip. Coming back even stronger tho I hope

The piston ring installation tool can overstress a piston ring quite easily. I had a customer who expanded the ring past its tension limit with that tool and ended up in the EXACT position you are. I use my fingernails to open the ring JUST large enough to slip it into it land, its slower but insures you dont have that problem.

Way to stay positive Sam. I am shocked man,you put this motor together so damn meticulously...crazy. Youll get it back together and ripping here soon man! Stay positive!

Generally speaking .... forged pistons need a little more piston to bore clearance ...that cylinder clearance was I LITTLE too tight .. (the others just got by..) The lack of clearance BROKE the boundary layer for oil film to keep metal away from metal...and the piston Ali picked up on the bore metal.....

sleeves always get oval after time. you never put new pistons in a unbored or honed engine. get new pistons and sleeves. have the sleeves bored to the measurements of the pistons. always measure the work of the machineshop with an inner gauge with 3 points balance your pistons yourself. when you put on the head. measure the squeeze first and than determinate the thickness of your head gasket. Good luck with the build. hope to see a lot of vids

Happy for you, Sam. Thanks for telling us the whole story! Waiting for the new block assembly videos.

Dam a check with a bore guage before you even start messing with a second hand block is always essential

A 3 spoke adj cam gears will break loose if the valves touch the pistons which saves mines a couple times

That is lubricator error, and detonation combination. Sometimes you see that when oil squirters fail and pistons get hot and ring gap goes away, or too little gap on piston rings.

You should always check ring gap in a high performance engine by checking close to bottom middle then top gap maybe perfect in middle but bottom is tight or loose at top ect also a 60$ 2in to 6in Dail bore gauge is a great tool to check out of roundness

The fastest and wisest would be to take the 2.2 block from Okachan. Definitely don't buy only the one piston because the wear will not be the same and you will be still stuck on about 500HP what doesn't make sense and you still invest all the hard work. The common sense would definitely be 2.2 if you want to unlock the full potential.

The dowels on a s15 engine might be longer because the s15 with a 6 speed has a dual mass flywheel, and the s14 doesn’t. Also the dual mass flywheel on s15 makes it harder to replace the clutch than on a 5 speed s14.

great detective work, it's so gratifying to finally put all the pieces of the mystery together and they all fit. Do the SR right and how you want it and while you wait I think theres an R33 in the corner that wants some love. RB25.........?

Get yourself a work bench too, towel everything down before you assort the parts out neatly neatly then cover everything with plastic while your not working on the engine. Having everything just sprawled out on the ground on cardboard is asking for contamination

Just like you said, I'm glad the culprit of the sound was found. Onto a sleeved block we go!

“There is nothing but happy accidents” -Bob Ross No seriously I’m glad you found the problem. Everything makes sense now!

i have to say i never saw anyone while he was building the motor check the bore with a dial gauge for roundness and for runout which is like the first basic step of what you check when you are looking to rebuild a block

would love to see you do 2.2 and go all out with this build! Make her go VROOM!!!!

Keep up the great content and cant wait to see you back in the states soon. I know the CT boys will be stoked!!!

Loving the content recently keep it up bro your teaching me so much about SR engines and the s chassis thanks man 🙏🙏🙏🙏🙏❤️❤️❤️

You probably already know this but future reference you can take a screw driver And put the metal top on several different locations that you think the noise might be coming from and then put the handle up to your ear. It will get you to almost the exact location of the noise as it amplifies the sound. It works really really well as far as one of the several procedures taken to diagnose a problem. Anyways sucks to hear about your block

Great diagnostic work and figuring out the history of the block! Glad you figured it out, what a story!

I'm so happy you two figured it out and I remembered when Okachan gave you that block mentioning that a boost controller went bad making the engine run at full boost. Looking forward to seeing the block with new sleeves

PMSL love the sped up audio while spraying the head valves.

Honestly your s15 is my dream car, you give me so much inspiration to never give up man, keep up the good work

A broken piston and possibly a rebore of the block sucks, but i a way i think to find the issue rather than feeling and hearing something is wrong must have been a true relief. Glad to see you didn't take the engine out for nothing and have an explanation on what caused it, which is not your fault at the end of the day. 😉😀

Will be great to see you two working together again. If was me would two engines one spare to rotate to keep you on the track more. Great to get closer in your engine.

Stoked to see the problem in plain sight and know that chain guide play is normal. I know it's very common on Cummins' engines to ovalize cylinders. Would make sense if the bore was worn, or if the sleeves were giving out.

Nice to see you stay positive, keep at it! Onwards and upwards

Really like the in depth engine teardown. Sleeves song good, always can rebuild. Diesel engine's are like that✌️😊

I think you should research which bore and what kind of SR setup feels the best for drifting. As this is your main drift car (comp car maybe?), you should set it up in a way that feels the best for you, along with what will be best for its usage.

Well Sam, you brought up a check I haven't thought of in years. The word of the day is concentric. If any portion of the bore was out of round, the rings can fail. That's why the check exists. Because you were working with an experienced builder, I took it for granted that the bores on that block were fine. I hope you get the block back quickly. At least you got closure and we got an answer to what that noise was. Hope you get it back soon so we can see you send it at Ebisu before the season ends!

Maybe should've sent it to a machine shop before building the engine, with motors I find everything works best when you take your time and if it's worth doing Do it right!

That sucks that happened but at least you found the problem and you learned something from it. I forgot my dad told me if a knock goes away when you take spark away its rod knock, piston slap or conrod pin...🤦 I wished I would have remembered that sooner

It's great you found the knocking problem and I'm glad your relieved and not mad, but big sad face, I wish you'd be shredding some rubber and blowing smoke with this mad car. I know it'll be back together in a flash though, like I said you've got it setup so you can slap everything back together and have 'er running in a day.

from the look of that ring, i think your dead on the head with the bore being slightly off you can see the ring rubbed and got hot * it thinned and flattened out where the discolouring is ( in turn expanding and using all the ring gap then snapping at the hot spot) super unfortunate bud. keep your head up you did everything right ( on video anyways ;) lol ) was shit luck and this stuff happens build it again and now you know something new and to look out for in the future ! cheers bro

Hayy sammit love to see your progression ❤ i also pro motor bike racer. In malaysia some time we just use petrol gas or part cleaner to check if valve are licking . But love to hear that you know about that right now. Add your experience ❤💪

I really admire the way you don't seem to stress a lot when it's something you cant change and have no control over.

Awesome when you have a sensai like that on speed dial. It’s the little things they teach you along the journey 🤙

So awesome I'm glad you got closure cuz I would drive me nuts too

So glad finally you have your answers

Much needed Closure. I was racking my brain about as much as you were. Keep it up. You and everyone else are amazing! Thank you and Okuchan!

Glad you found out what is wrong, like you said, depends on the parts available to do 2.0 or 2.2 block will be better

Glad you found the sneaky culprit Sam!

Glad everyone wants to help you out! Can you make you’re cars into “MINI GT’ cars? Or something similar? I’d like to have the silvias parked together

Hey Sam. So glad you found the issue. I have a sort of legality question though, regarding that block not having an engine number and the car being a street car, how was it possible to get the car 'registered'? Because in my home country Jamaica, without the proper documentation matching the hardware, they would confiscate the car and class it as a stolen engine that was tampered with.

Hey Sam will you coat the piston skirts on your next motor? Coat the tops too when you do it it makes it more thermally efficient

Balls dude that sucks but glad to see you're getting things worked out.

Would love if u go 2.2 but time will tell and I learn a lot of the sr and the malicious thing that Nissan do and the limit of the sleeve and it just pure knowledge for me as future mechanic and keep those positive attitude Sam

Same method when doing a leak down check, you could use soapy water and spray it on the valves.

We've all been there mate, everyone had at least one engine that failed even before leaving the shop. Stay positive it's all gonna be good

Hi Sam. I’m glad you found the problem with the engine but I have an off topic question. I was wondering if you have the paint code to the pink in the Sylvia. I have a key truck here in the states and would like to pain it the same. Thanks in advance.

We got rod knock ruddy… now introducing Piston Slap Sammy!!!!

Great video! Where did you say you got the head stands from??

Love to see you do a 2.2

keep up the great content sam

There’s your tapping sound!!!!! Found it! That’s got to be relieving now knowing what it was making that tap

Someone commented about this on the video where you pulled the engine and they said all the things you discovered.. piston slap.👍

I'm going through a problem with my r170 slk benz my auto box is stuck in gear and I've tried everything ... sucks not knowing what's wrong with your car ... I hope I find the relief you have ...

Great content. Keep up the good work.

Yep it’s just like that when I go to Biltema, that’s about the equivalent of hobo freight.

You live you learn. Hard part is remembering the lessons 🤙👍

You could hone it, but as the slives are weak and it´s essentially a race motor I don't think that's the best idea. But as long as you get a new pistone that is in balance with the other then I don't think you should need more then one new piston, but I am used to old 50's and 60's stuff so could be different for this sort of stuff.

2jz be like Sam! Sam! Sam!!!!!!!!!

May as well put a HKS stroker crank in glad you caught it before it went boom.

I guess you can start trusting yourself for the next engine build more without having doubts at all. Its all for good 🙌

Ah, so it was in fact a piston skirt slapping. I was thinking more of it being caused by too much play in a wrist pin rather than an out-of-round cylinder or whatnot.

Hey you need stainless sleeves and they hold it all to gether on race motor but you need to freeze them to sink them to put in

Dude I'd go with the 2.2 from okachan over build it and de tune it for the power you want it's much easier on parts compared to maxing a set-up out to make what you want. then you could build the other block for the other s15 or for a back up to the pink one

Have you ever thought about using a mirror to look at the underside of the head, when you were looking for valve seat seal? It's a LOT easier than standing on your head to look up underneath the head.

Drop a LS in it and be done. Lol. Stoked you found the issue tho

I had that same thing happen to my h23 prelude motor

I say it all the time and I'll say it again... Sammits uploads are life right now

(randomly cleans engine, finds the problem) "NANI?!"

U can use gas to flip it and fill the chamber and mark the full level with a marker or whatever and give it a while and then check to see if the level inside the chamber has dropped at all

Always gotta go to a machine shop for every engine build.

I tell you was a piston when you show us the noise he was doing lol that happens to my s15 too 😂

Be a maverick and swap in a z31 vg30et or vg33e with the z31 tubo parts. Make that 500hp goal easy with nissan power. People hit 500 boosting na vg30e on stock internals. And easier to work on than the z32 dohc version. paired with a megasquirt 3 gold box ecu the engine has a lot of potential. I love my 87 300zx turbo with this setup.

Just stroke it leaves the door open for more power and sounds rad 👍

True it's bin 3 weeks I forget I have to buy that small kit of screwdrivers

Those head stands are pretty sweet ima have to get a couple of those. I didn't know they existed lol

Sleeve it. How are the spira-locks? You’d think you’d have serious blow by. Did the compression check out after assembly?

Did you put piston rings in and check the measurements throughout the entire top, middle, and bottom of the block's piston bore? I made the same mistake on my first build.

brake/parts cleaner in the port is the industry standard for your average mechanical workshop and even used as a double check method by engine machining shops

I would take the 2.2 Okachan have get the car running asap and deal with the engine when you know you have all you need to start to rebuild it, then have it as a spare engine. That way you have the car to use and can drive it pretty soon, then focus on other project and deal with the engine rebuild on rainy days when driving is a no no.. That's my two cents.. how and what I would have done... I mean rather have car running asap then on blocks in the shop. Keep up the awesomeness, CHEERS!

Ultimately it's your call how insane you want to build this thing but an absolute must is reliability so 2.1 with a mid power push set up or a 2.2 with a low to mid setup that will do everything you want it to do. Rem make perfect Ram make the insane berserker

ouch! thats racing baby

Been awhile since we’ve seen Okachan. I feel like it’s long overdue!

is this like a torqueplate situation? or lack there of while boreing the cilynder?

What's worrying is my forged engine, for the last 11k miles has really bad piston slap on cold start. How your piston 1 is how all mine are. Bores are immaculate and there's no damage to the pistons. I use Wiseco pistons and I've heard/read they do that

Skirt slap. Check your play in wrist pins

2.2.....foreshadowing Sam's future....

Let's not get it twisted it was oversight, overlook, that nobody thought about but like you said these things happen when building motors, you just need to learn from your mistakes and move on and build it better. I know you have it in you and can't wait for the great content ahead. Also I don't think it was anyone's fault and I'm glad you're staying positive and learning from this. If anything next time you'll probably check that and be called to anal about the build but we build on our futures from the past.

Absolutely right, what you should have done is buy twenty more things you don't need but might need in the future. Lol. Great video👍

Ring failure. Time to sleeve it! I had to go up a size on my rb25det

Well done but in my opinion do it properly once with all good quality gear, especially if drifting/ racing the car. Can't wait to see it going agian 👍

How come u didn't measure the bores to make sure the piston to wall clearance was correct for the new pistons ?

just been watching FDJ dude you need a 2.2 SR like Yamadas that thing sounds nuts

the 1 thing we can learn from failers i what not to do, learnt alooot from this video GG thanks for sharing