hjtrbo Bronze Donating Members 320 Member For: 13y 9m 19d Posted 28/07/22 08:32 PM Author Share Posted 28/07/22 08:32 PM Ended up taking the whole head to Powerhouse engines. John reckons he can get it back to in about a week which suits me perfect. How do I clean the carbon build up off the pistons and clean the block surface? Was thinking a dremel with a scotch disc shouldn't be to hard on it as long as I use common sense. Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,827 Member For: 9y 9m 9d Gender: Male Location: South Australia Posted 29/07/22 01:51 AM Share Posted 29/07/22 01:51 AM You can clean the pistons with whatever you want. Don't let the carbon and associated juices into the engine, they are abrasive. You can't prepare anything for an MLS gasket by hand, it has to be machined. They need 20 RA or less to seal properly. I know some folks will slap in a cleaned up second hand MLS gasket absolutely covered with some sealant and say she'll be right and it may well be Link to comment Share on other sites More sharing options...
hjtrbo Bronze Donating Members 320 Member For: 13y 9m 19d Posted 29/07/22 01:59 AM Author Share Posted 29/07/22 01:59 AM 20ra is about a thousands of an inch average roughness I'm reading from google. That's not very much lol. If I'm within 2 thou of an inch on the lathe with emery paper finishing I call it good. I've got a fine machining stone, I'll rip that over it nve its clean and see what it looks like. If there's heaps of peaks and valleys I'll get it machined. Fingers crossed I can pull magic out my arse. Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,827 Member For: 9y 9m 9d Gender: Male Location: South Australia Posted 29/07/22 02:42 AM Share Posted 29/07/22 02:42 AM Haha yerp like I said it's not a job you can achieve by hand. Sure you can get an area of the deck to that finish but the deck has to be level too which is generally made worse when hand finishing. If you insist on installing a new mls gasket like this then use a fair whack of hylomar at the least. I know the gaskets say to install them dry as they have their own coating, but they also require a certain finish to seal. I wasn't going to mention the other ways of sealing an mls gasket cos it's not how you should do it, but I'd rather see your gasket seal than have you waste your money and time. This is the stuff you can use to seal up a second hand, completely stripped and clean mls gasket with a hand finished iron block. Obviously you can use it with a new gasket too. So yeah it's not recommended but it works so it's not dodgy either, I guess it's somewhere in between. Fwiw the Athena gasket ($120 more than a cometic mls) is composite/steel ring and will seal up against a clean used deck surface. Keep that in mind before you go yanking the bottom end out...haha you shouldn't have pulled the head off either but we're here now. Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 28,922 Member For: 16y 6m 28d Gender: Male Location: Melbourne Posted 29/07/22 02:58 AM Share Posted 29/07/22 02:58 AM or just get the block and head decked so the MLS gasket seals properly... not a huge expenditure if the engine is out and apart anyway. 1 Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,827 Member For: 9y 9m 9d Gender: Male Location: South Australia Posted 29/07/22 03:02 AM Share Posted 29/07/22 03:02 AM (edited) May as well add in some rods and pistons too Haha fixes an oil leak, gets built motor instead Edited 29/07/22 03:05 AM by Puffwagon Friday arvo spelling 1 Link to comment Share on other sites More sharing options...
hjtrbo Bronze Donating Members 320 Member For: 13y 9m 19d Posted 29/07/22 03:07 AM Author Share Posted 29/07/22 03:07 AM (edited) I knew this would happen, don't get me thinking about it dude, coz I'll farken do it lol! 31 minutes ago, Puffwagon said: .haha you shouldn't have pulled the head off either but we're here now. Lol, yeah I'm a do first think later kind of guy. I'd be lonely if the mrs didn't adjust to live with it. It's a bloody disease I tell ya. 15 minutes ago, k31th said: or just get the block and head decked so the MLS gasket seals properly... not a huge expenditure if the engine is out and apart anyway. Yeah, that's what will end up happening I reckon. Only the bellhousing bolts and engine mounts to go. Probably under an hours work. Will spend 4 hours just to clean the deck so its probably time well spent. Still had to raise the motor anyway to do oil pump gears. Edited 29/07/22 03:13 AM by hjtrbo Yep, Friday and OCD. Time for a beer Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,827 Member For: 9y 9m 9d Gender: Male Location: South Australia Posted 29/07/22 03:11 AM Share Posted 29/07/22 03:11 AM Ay don't blame me, it was like that when I got here 1 Link to comment Share on other sites More sharing options...
hjtrbo Bronze Donating Members 320 Member For: 13y 9m 19d Posted 29/07/22 03:24 AM Author Share Posted 29/07/22 03:24 AM Ah, remerbered what I was going to ask now after your response this morning about gaskets... Lets pretend I'm not getting it built, I was hoping to use the gasket that comes in the permatec VRS kit. For 450rwkw was hoping that would be ok? I am upgrading the head studs to ARP. And I just called the engine machinist to organise decking my block. Had a quick go with the scotch brite, WD40 and machining stone. Fark that, my back will be toast by the end of the day. 1 Link to comment Share on other sites More sharing options...
Puffwagon Puff Gold Donating Members 15,827 Member For: 9y 9m 9d Gender: Male Location: South Australia Posted 29/07/22 03:40 AM Share Posted 29/07/22 03:40 AM Yes the gasket will be fine for that power level. Link to comment Share on other sites More sharing options...
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