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GEP Timing set with older 6.5?

daustin

daustin

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Location
Woodstock, GA
Hi guys,

When i change my injection pump i'd like to also do the timing chain & Gears. I have a nearly new set off a 2006 GEP, would that work on my '93 block? (i think it's a 599 block)

Thanks
Don
 
Yes, they all fit. The only difference is the reluctor wheel from DB-2 to DS-4.
If you have a DB-2, just swap the chain and use the old sprockets.
 
Thanks!

I thought it would work with my DB-2 pump, i may swap the gears while i'm in there. The old beast has 230,000 miles on the original engine.

Don
 
Do the front main seal while your there. How's your waterpump? What's the condition of harmonic balancer and stupid rubber belt drive.

I hate when a project price goes up, but worse is tearing something apart twice.
 
Replaced the balancer, rubber belt drive and water pump about 18 months ago. Front seal i had forgot about, good catch!

Thanks
Don
 
The timing chains stretch out to sloppy in 30K miles or less. Use a new chain. The gears don't really wear that much compared to the nearly 1" slop allowed in the chain. If you can put a timing gear set in it as they are available again.

You can change the IP without pulling the front cover by removing the oil fill and going in through that hole then rotating the engine to get to the 3 IP drive gear bolts. Use a magnet on the socket to keep the bolts in the socket on removal/install.
 
If you can swing it do the gears, you can reuse them when it's rebuild time.

I don't have Leroys gear drive, YET. When my engine was apart last time, no one had them available.
But I did use in my previous 6.5s the dsg gears. Love them. Before my truck2 in fleet trucks, 1 db2 and 1 ds4. Both did great. I expect with Leroys QC, they will be as good or better.
 
Well i already have the GEP gears & chain, well and the GEP heads too off that engine so i might as well change the gears while i'm there. Bobby Martin got the short block a few years ago. I've still got it's brother (i got two military GEP take outs when i got them) and i've considered just swapping engines. But the current 599 block seems solid, runs ok (except for the IP issue), dosen't use oil so i'm thinking swap the IP, change the timing chain/gears and rock on.

Don
 
I just don't see why you would go through the trouble to swap out a used chain for another used chain. You have several oil and coolant leak points that can give you trouble. You remove most of the complete front of the engine to get there. X2 if you get at running and watch a sprinkler gusher of a leak from a torn gasket etc. Nevermind the special tool required for the timing cover to line everything up including the timing mark for line to line timing.

The spec on a used chain slop is nearly 1" and you will find that the chain stretches to this in the first 30K miles. After that the chain is more or less stable. Any wear on the IP gears is irrelevant with that much chain slop. Besides if you wore the IP gears the rest of the engine has suffered badly - not the case as far as I can tell.

The chain isn't really up to the task of the IP pressure spikes it sees and this is why it stretches out.

Again I suggest KISS and just swap and re-time by ear the IP that is giving you trouble. You will have to advance it slightly for either used chain.
 
WarWagon said:
I just don't see why you would go through the trouble to swap out a used chain for another used chain. You have several oil and coolant leak points that can give you trouble. You remove most of the complete front of the engine to get there. X2 if you get at running and watch a sprinkler gusher of a leak from a torn gasket etc. Nevermind the special tool required for the timing cover to line everything up including the timing mark for line to line timing.

The spec on a used chain slop is nearly 1" and you will find that the chain stretches to this in the first 30K miles. After that the chain is more or less stable. Any wear on the IP gears is irrelevant with that much chain slop. Besides if you wore the IP gears the rest of the engine has suffered badly - not the case as far as I can tell.

The chain isn't really up to the task of the IP pressure spikes it sees and this is why it stretches out.

Again I suggest KISS and just swap and re-time by ear the IP that is giving you trouble. You will have to advance it slightly for either used chain.
Click to expand...

The GEP set only has about 4K miles on it, if it were off an engine that was ran a while i'd say no way. lol

Don
 
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