First you match the gasket to the bottom of the jug. Then you mark the case with the matched gasket. I use saran wrap over the top of a foam insert cut to slide over the rod and fit the case. Do all the work with the engine on it's side. Then remove the wrap and foam with engine upside down and a artists brush to remove anything left on the case and rod while engine is upside down.View media item 60445View media item 60446So once we have done the transfer redirecting mod without narrowing down the window with JB Weld, we can make use of the case matching mod.
Perhaps this is even achievable without splitting the case?
Can we use a chunk of putty to literally get an impression of how the case and jug are mismatched?
Has to be small cheap tools for me, I don't have a workshop so much as a spare bedroom.
I can't actually remember how wide the transfer window is, but if the 20.5mm figure on Jaguar's port map image is stock, before his JB Weld mod, then 3.5mm of JB Weld is a loss of 17% of the width/ area. I should think it matters more if you want high RPM. The JB Weld modded transfers are certainly able to do 8000 but... you want to go faster
Not so much for speed but getting the best cylinder fill possible to make power(torque) with, 17 percent may not seem like much to some but that's alot to me when there is so little to begin with.I can't actually remember how wide the transfer window is, but if the 20.5mm figure on Jaguar's port map image is stock, before his JB Weld mod, then 3.5mm of JB Weld is a loss of 17% of the width/ area. I should think it matters more if you want high RPM. The JB Weld modded transfers are certainly able to do 8000 but... you want to go faster
I was actually under the impression that we are all autistic here?
I have been diagnosed for two weeks lol.
Now I know that my urge to "optimise" things is a good part of my ASD.
So it's as important to me even if I want to limit (myself with) top rpm to a safer 7000?
I would think it's important at all rpm especaily below the pipe or on a stock pipe where as the charge is pumped up the transfers into the cylinder the exiting exhaust pressure pulls some out that doesn't get returned,So if that coupled with a loss of volume from the transfers is taking place the engine is strugleing to accelerate due to the lack of charge volume.So it's as important to me even if I want to limit (myself with) top rpm to a safer 7000?
I would just expect the difference the mod makes to the torque to be greater when the piston speed is faster than when it's slower,
but I don't doubt the mod is worth trying out anyway so that hardly matters.
