Just using the standard arp 425. Running a 64.5 sxe over an s480 sxe and burys my 100 lb gauge now!
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I have 5x20 from infinite performance.
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After a hot retorque, and valve adjustment, your good to go.
Keeping these things alive more than makes up for the slight loss of low rpm torque.
His smaller secondary will make more than enough cylinder pressure early on.
Yes he’ll have still good torque with the small turbos. I was mainly referring to start-up, hazing at idle, pre-boost smoke, spooling. I’ve been running 18.25:1 for years now. Very noticeable improvement over when I was running 17:1. The higher compression eliminated the idle haze I had with 5x20s.
How long should i wait to check them again? And do i need to be easy on it for a while? Ive always heard i need to dive it easy a week or so and retorque until they dont move anymore
I do the first re-torque after a few start-ups, then another after a week of driving. After that I check them periodically. Depends on your O-ring protrusion too. If you’re .008”-.010”, then a couple of re-torques may do it. If you have more protrusion, it may take more torques.
If you want to be really careful, just dont pull it down hard under boost. Is it stick or auto?
After one good hot retorque your good, another one after a couple hundred miles if you want to overdo it.
Put your compounds on and let it rip.
Those look really good! Good MIG welds!
Are you going to go with twins still?