Joey Mack Posted Saturday at 07:38 PM Share Posted Saturday at 07:38 PM (edited) All good. But now i have to ask..... Im guessing you either ran the valves using an overlap method, or you were up on #6, but started adjusting on #1?? Or mabey you rotated the engine the wrong way.... Or.. you didnt adjusted the front valves to .024" and the rear valves to .016" ok Your turn... 🤔🍻 Edited Saturday at 11:46 PM by Joey Mack Pour sell fone sperring 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572319 Share on other sites More sharing options...
Joey Mack Posted Saturday at 11:34 PM Share Posted Saturday at 11:34 PM Im glad you found my post funny, fjh.. i meant it to be... 🍻 Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572352 Share on other sites More sharing options...
Jody Scott Posted Sunday at 03:13 PM Share Posted Sunday at 03:13 PM I at first I adjusted the valves the way I adjust a farm tractors valves, that was a mistake. When I first opened the valve covers and looked at the exhaust rockers, holy cow the gap was like a quarter of an inch and I thought what moron adjusted these things. I couldn’t find any markings on the balancer or the flywheel and nobody around to help me find them, so I did the best I could and was confident in my abilities to adjust valves. This was the worst valve adjusting disaster of my life and I think I ran the overhead like 6 times before I was able to get about half the valves right. By the time I was able to get a friend to help me find the marks on the fly wheel, I was seriously questioning my abilities and looking for some happy meds. I still did it wrong after I found the marks on the fly wheel because of the way the numbers are stamped “1&6” “2&5” “3&4” I assumed that meant adjust the valves on 1&6 at the same time, nope that is not what it means. Adjust 1 then do the first number on the second set of numbers then the third set of numbers then you start on the second set of numbers after a complete revolution and adjust 6, then 5, then 4 but follow the numbers on the flywheel. I am seriously surprised I didn’t screw something up, it was bad! Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572388 Share on other sites More sharing options...
Joey Mack Posted Sunday at 03:43 PM Share Posted Sunday at 03:43 PM Firing order is: Too Young,,, Too Old,,, Just Right,,, 1-5 3-6 2-4... If you adjusted 6,5,4. Its still wrong. But i respect all the effort you are applying to this. I bet the numbers on the flywheel were hard to find.. Jojo 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572391 Share on other sites More sharing options...
Jody Scott Posted Sunday at 07:14 PM Share Posted Sunday at 07:14 PM I scrubbed that flywheel to find those numbers, and I did the adjustment just like you stated, 1-5, 3-6, 2-4 the truck runs good now. For the most part this has been a fun project, most of the parts have been purchased from used salvage yards and the rest from online suppliers. The next major challenge will be the engine brakes. 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572403 Share on other sites More sharing options...
Joey Mack Posted Sunday at 07:19 PM Share Posted Sunday at 07:19 PM Are they Jacobs 690 series? Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572404 Share on other sites More sharing options...
Jody Scott Posted Monday at 05:40 AM Share Posted Monday at 05:40 AM I have not purchased the engine brakes yet. Are the 690 Jacob’s the ones to get? Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572469 Share on other sites More sharing options...
Joey Mack Posted Monday at 11:46 AM Share Posted Monday at 11:46 AM I think you have an E-Tech. So 690 is it. Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572474 Share on other sites More sharing options...
Jody Scott Posted Monday at 11:05 PM Share Posted Monday at 11:05 PM Yes, my engine is an E-Tech. Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572527 Share on other sites More sharing options...
Jody Scott Posted 22 hours ago Share Posted 22 hours ago I have an update. Today I went in and had the horsepower increased from 355/380 to 380/410 hp on my 2002 Mach CH613. I figured it would at the least take half a day to do this but the dealer got me right in and they were done with the truck in about 45 minutes and I was out the door with the bill paid in an hour and 15 minutes. The tech said that I probably would not notice anything special as far as super performance and to temper my expectations. It’s a truck not a race car “copy” I understand that but I find this kind of stuff interesting so let me recap as to what has happened so far. 1. Installed a boost gauge to keep track of changes. 2. Stock Maxicruse 355/380 boost 25psi max unloaded 3. Installed 900cc injectors 355/380 32 psi max unloaded 4. Increase horsepower program to 380/410 w/ 900cc injectors 35psi boost max unloaded. I will take the truck on an equipment run next week and let you know how it goes. 2 Quote Link to comment https://www.bigmacktrucks.com/topic/72487-355-380-horsepower-increase/page/3/#findComment-572752 Share on other sites More sharing options...
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