Nissan SR20-DET Block Resurfacing

John Edwards discusses some of the reasons why aluminum blocks require resurfacing and how it's done on the Sunnen HBS-1300 @ Costa Mesa R&D Automotive Machine 949.631.6376
www.engine-machining.com

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Autos & Vehicles

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• nissan
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• resurfacing
• milling
• hbs-3100
• sunnen
• john
• edwards
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[bcire10]

what type of machine are you using? 

[fiatnutz]

@bcire10 Sunnen HBS1300

[AxSxKxONE]

what about chemical removers?

[fiatnutz]

@AxSxKxONE - Haven't had any luck with them so far.

[journeyquest1]

More aluminum block garbage. Best engine i had was a Nissan NAPS-Z 2.4. Cast iron block/ alum head. Engine went 350,000 mi without pulling the head, or replacing timing chain (although it was starting to rattle.) Valves went but block was still good. My Honda has 90k and cat clogged, cooking my engine. Give me cast iron block even if it is 40lbs heavier.

[eddohan]

I noticed when resurfacing, the cutter/grinder(I dont know the real name of it) rotates on different speeds. On this block it rotates pretty fast. Does that has to do with different material of the block?

The finished shiny surface looks so good!

[bmxguy08]

Very nice work!! i just dropped another one of my SR20 blocks at my local machine shop. These blocks always have low spots on the front left there by cyclinder #1 I have seen countless kids try and just surface the head and the they piss out oil right there. then they have to tear everything apart again! dont be cheap do things the right way!

[cmkoh100]

Yes, it had been polished off a thin layer of the surface and makes it shiny.

But it seems the polisher plane is not on the same surface of the block. some tilt offsets are there......

[jcadlols]

@hisveggieness very slowly. Considering he's cutting the aluminium back straight after spraying the graphite, I'd say it's a non issue. It'd be a good idea to wipe the bores and wash the galleries though. :)

[macagnoful]

Talk about stupid... He forgot to resurface the block with the oil pump on......

[rich0585]

I feel that using those purple Roloc scotchbrite disks is pretty stupid to use on a head or block. But I have had alot of success with those 3M roloc rubber bristle disks. They are made to not damage the aluminum surface, just remove gasket material. But I only used it on a Subaru, and you can pretty much glue those engines together... Great video.

[angry4nus]

11 ra is damn good

[hisveggieness]

Doesn't graphite corrode aluminium?

[FrankaDith]

Im thinking its you that set your machine off set.