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Here is an example of the piston out of the hole. It's barely noticeable but you can see it's approximately 0.0045 above the deck.
You can also see the deck of the block was surfaced as well.
I’ve never heard of not tuning for meth. Straight water, sure, but all my other cars have all been tuned to account for the octane boost. Twin 450 pumps through -8 everything, 1000cc injectors. I didn’t build this motor, and the guy who had it before me also blew it, which is why they took it out .020.
If you tune for the methanol and it fails.. you see what can happen.
Tune for your pump gas and let the methanol help cool air and give more octane.
Just checked ring gap. .017 on the top of one of them 🤦♂️. Is there a preferred way way to lower compression on these? I think this block can be saved and I am not going to do it through the rods again. I usually do it with pistons on my serious builds, and headspacer on my not so serious ones on my VW engines. Leaning towards pistons on this too. Thoughts?
.017" with that bore size is too tight for boost.
Just get pistons with the right top to get the compression you want. Id shoot for 9.5CR.
Here is an example of the piston out of the hole. It's barely noticeable but you can see it's approximately 0.0045 above the deck.
You can also see the deck of the block was surfaced as well.
Took a few of the mains apart. Probably nothing you wouldn’t expect, but I thought I’d share since we’re in this deep.
one of the mains is down past the coating and rusting. I’m sure they are beat up because it wasn’t line honed. I’m also 100% certain that the block wasn’t decked, but they tried to make up for it with copious amounts of RTV. 🤦♂️🤦♂️
Most bearings are, hence why when you run an oil analysis you get copper showing up.
Edit: you may enjoy this article. I am surprised you did not know this already. I’m guessing you have some brain space yet!
https://www.performanceracing.com/magazine/columns/02-01-2021/tech-update-which-bearing-best-you
Of course I do! Always willing to learn. The mains I use are black coated and i always figured they were half steel and half wizardry. Just looked them up and they said 2% copper. I've never had mains wear to this point. I also haven't done an oil analysis before and I have 1 car that i don't even want to know. It sees the limiter on every single drive and I fear if i start finding stuff i don't want to it will break haha. Thanks for the knowledge.
Took a few of the mains apart. Probably nothing you wouldn’t expect, but I thought I’d share since we’re in this deep.
one of the mains is down past the coating and rusting. I’m sure they are beat up because it wasn’t line honed. I’m also 100% certain that the block wasn’t decked, but they tried to make up for it with copious amounts of RTV. 🤦♂️🤦♂️
That block was not decked. Hard to say on the mains though.
The bearings look like they had a lot of trash go through them...
That block was not decked. Hard to say on the mains though.
The bearings look like they had a lot of trash go through them...
Block was definitely not decked, cylinders have no cross hatching. I talked to the guy that built it and he said it wasn’t line honed. Almost all of the top rings are worn and pitted. Gaps are way too small and every single ring closed. #3 piston also has a small crack in it. This whole thing is a circus.
Apr 10, 2023 | 01:13 AM
