trend tool steel lifter oil metering

tuffxf · 03-30-2016, 06:07 AM

G,day,
Freshening a Cleveland for myself here at present and am using a cast iron nitrided cam from bullet and some trend tool steel uncoated lifters.
Previous lifters were flat tappets from howards, edm, they meter oil with a disc under the pushrod cup with a groove .088" x .010" deep, on the top of this disc is the same groove at 90 degrees to the underneath one.
You guys would have seen it..
The trends came with a .030" hole in the pushrod seat, no other form of metering body is open under the seat.
Lifter bores are bushed with .060" holes.
I noticed while priming the engine without the pushrods and valve gear on it that seemed like bulk oil was coming through the lifters.
Done some playing with a std set of crower lifters, same metering as the howards, same rpm on the drill, higher oil pressure.
Have put some restricted pushrod cups in the trend lifters with .014" holes.
Seems to be similar now to the crowers / howards.?
I saw a post from Vortecpro the other day about these things over oiling and did ring him and will share the results with him when I get my head around it.
Has any one played with these and tried to achieve similar flow through them as the std crower or howard type lifter( not sure of the correct terminology for that style of metering)
The oiling hole for the trend lifter is in the waist band of the lifter same as the crower type.
Just wanting to double check my self here, these things don't need the top end flooded, rather have the priority at the bottom end.
Thanks very much!
Cheers
Paul

03-30-2016, 06:07 AM	#1
tuffxf Junior Member Join Date: Nov 2010 Posts: 41 Likes: 4 Liked 11 Times in 5 Posts	trend tool steel lifter oil metering G,day, Freshening a Cleveland for myself here at present and am using a cast iron nitrided cam from bullet and some trend tool steel uncoated lifters. Previous lifters were flat tappets from howards, edm, they meter oil with a disc under the pushrod cup with a groove .088" x .010" deep, on the top of this disc is the same groove at 90 degrees to the underneath one. You guys would have seen it.. The trends came with a .030" hole in the pushrod seat, no other form of metering body is open under the seat. Lifter bores are bushed with .060" holes. I noticed while priming the engine without the pushrods and valve gear on it that seemed like bulk oil was coming through the lifters. Done some playing with a std set of crower lifters, same metering as the howards, same rpm on the drill, higher oil pressure. Have put some restricted pushrod cups in the trend lifters with .014" holes. Seems to be similar now to the crowers / howards.? I saw a post from Vortecpro the other day about these things over oiling and did ring him and will share the results with him when I get my head around it. Has any one played with these and tried to achieve similar flow through them as the std crower or howard type lifter( not sure of the correct terminology for that style of metering) The oiling hole for the trend lifter is in the waist band of the lifter same as the crower type. Just wanting to double check my self here, these things don't need the top end flooded, rather have the priority at the bottom end. Thanks very much! Cheers Paul