INTERNAL ENGINE MODIFICATIONS Valvetrain |Heads | Strokers | Design | Assembly

Another LQ4 Project

Old Dec 7, 2023 | 11:07 AM
  #101  
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Congrats, your thread made it as one of the most popular this year haha

Any updates?
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Old Dec 7, 2023 | 01:46 PM
  #102  
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Originally Posted by silentbravo
Congrats, your thread made it as one of the most popular this year haha

Any updates?
well the parts from boost district came in a couple weeks ago. Heads got ported and comb chambers increased/opened up.

Still waiting on the rotating ***'y from Mast so I can get the block machined.
I'm pretty much past the bulk-purchase phase and into the marathon waiting game of buying parts as I get the money and time. OH yeah, and this project is on the back burner with the recent move and now Christmas is soaking up all my expendable income. Once we get past tax season I should be back on the hot plate.

I guess i need to find someone to reinforce the brick for the intercooler. It's been over a month but I think Roshan from boost district said you don't need it unless you're making max power, I think he cited a hp number but can't remember. I'd rather not roll the dice.
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Old Dec 7, 2023 | 07:53 PM
  #103  
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I don't know about max power, it's more of a boost limit for the brick. Somewhere around that 11-13 PSI is when they start to collapse I'm pretty sure. Factory LSA boost on the cars is somewhere around 8-9 PSI max I think, so just that little bit more and the end tank starts to collapse.

I bought my LSA used and the guy said he was running around 11-12 PSI, and I noticed the end tank on my brick was just slightly starting to collapse in (I assume it should have had a slight bulge on the end, not concave), not bad enough to replace so I had a plate welded on it and hopefully it's fine.
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Old Jan 9, 2024 | 09:18 PM
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Updates! Nice project!
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Old Aug 16, 2024 | 03:43 PM
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This has been on the shelf for awhile but I'm blowing the dust off a little.
Clearanced the block enough to be able to set the L8T crank in. This iron is actually really easy to grind with a cheap amazon bit. I assume I need .060 between the counterweight and the main web that carries the thrust bearing?

My ported and polished 823 heads got done months ago, finally unwrapped them. Measured at 73cc. Machinist installed BTR valves and 660 springs. The comb chamber is rougher than I expected, I thought softening a head meant you ended up with a really smooth surface.
I need to figure out the deck clearance but it's looking like I'll be around 10.7:1.






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