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[fastivab6tg25mr]

I wish,  it's either a valve/valve seat contact issue or weak valve springs.

[fastivab6tg25mr]

Did a leak down test, 20% leakage through the intake valves, pulled the head to see if I could lap them in but was not successful. The head is at the machine shop getting the valves and seats cut. Should only take a week or so. Then back to all the checks before dyno tuning.

[fastivab6tg25mr]

I picked m head up from the machine shop. Final verdict is 4 slightly bent valves from unevely cut seats caused by the previous machine shop. They think the pervious shop's pilot may have been bent and the only reason it stayed sealed for so long is the pressure from my beefy valve springs. I re-shimmed all the solid lifter buckets last night, only took 2hrs this time. Gonna assemble the rest of the head tonight. My nephew has been taking auto shop and wanting to learn about cars so he's gonna help me get it back in and running this weekend. If we get done soon enough maybe ill have him hit the buttons on VE Analize live to get it in the ball park before the dyno tune.

[MTZ]

I picked m head up from the machine shop. Final verdict is 4 slightly bent valves from unevely cut seats caused by the previous machine shop. They think the pervious shop's pilot may have been bent and the only reason it stayed sealed for so long is the pressure from my beefy valve springs. I re-shimmed all the solid lifter buckets last night, only took 2hrs this time. Gonna assemble the rest of the head tonight. My nephew has been taking auto shop and wanting to learn about cars so he's gonna help me get it back in and running this weekend. If we get done soon enough maybe ill have him hit the buttons on VE Analize live to get it in the ball park before the dyno tune.

sucks about the shoddy machine shop but glad its going to be sorted out

[fastivab6tg25mr]

My truck is definetly cursed, I got the head on, seems like it running great. Im redoing my base tune so i can drive it around until i get in for my new power tune. I found my tps signal is freaking out causing it not to go into closed loop idle or lean out during cruising and will randomly command accel or decel enrichment. I was planning on finding the problem last weekend but when i fired my truck up to pull it in the shop to put the scope on the tps the main voltage dropped from 14.7-12.3 because the alternator stopped charging. I was so sick of the garbage CS130s that keep breaking(this one makes the 4th time the alternator has failed since August 2025).  The FD RX-7 has the same mountings as the original kia one but is 100amps. I picked one up from autozone and it was dead right out of the box. I ended up swapping back to the original Kia alternater that was original to my 1999 engine. How the hell does a 27 year old kia alternator from pick-n-pull still work fine but I cant get a new one to last more than 30 days. I'm back on the road for now, I just can't run the A/C til the 200 amp new one gets here from powerbastards.

I dont know how i can have so many issues with new parts that are absolutely garbage.

thanks for coming to my rant.

[92CXyD]

I've always hated the CS line of alternator, Denso based 110amp alts I get off of fleebay never let me done.