Tired 6.5 to mild build!

[Burning oil]

I do have the P400 available if you hit the lotto. I am actualy building the same basic long block right now as Will just discribed.
Gapless rings are very advisable And I did get an extra set made up for me incase anyone needed a set. They are for standard bore 6.5 Gapless and ready to go $300

Welcome to TTS

 

[jbb421]

I do have the P400 available if you hit the lotto. I am actualy building the same basic long block right now as Will just discribed.
Gapless rings are very advisable And I did get an extra set made up for me incase anyone needed a set. They are for standard bore 6.5 Gapless and ready to go $300

Welcome to TTS

Thanks for the welcome, I could go for hitting the lotto. Better yet just send me that p400 and write it off as charity lol. I will definitely take a set if the block I decide to use doesn't need punched out.

If my current block isn't cracked, and I used splayed mains would it not be reliable at 300 horse?

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[Will L.]

No. Splayed mains are to help keep the crank from pushing the main caps away from the block when the block and caps are strong enough, but not connected well enough. Not the problem.

The blocks were not made of strong enough material for as thin as it is under the high compression and vibration. Having the oil squirters cut into it on turbo blocks only worsened the problem.

If the main webs are cracking the lock and stitch will repair it enough to hold, but the real fix for the older blocks is being lucky enough to find a good condition higher mileage block. The hammering and heat creates a "piened" effect. So back to the lottery theory.

The real fix is the optimizer engines that are a little beefier thickness with a much improved metalergy. They don't break.

One other thing to know is the harmonic balancer is a critical item. Many a 6.5 has lost the bottom end to a bad balancer. Good condition only, no doorman, and if at all possible fluid damper is still without fail afaik.

If you want serious capacity that is the magical p400. Break one, I dare ya! A couple buddies in the USMC got to due some abuse testing and basically you have to try to damage them. 300 ponies will not do it. One I watched them do was a twin gm8 set up with a built db2 and blasted the head gaskets at almost 55 psi @4,000 rpm. Up armoured hmmwv dragging a sled. Only lost headgaskets. TTY head bolts, I wander if they had studs and victor +10 gaskets what it might have changed.

 

[Will L.]

No. Splayed mains are to help keep the crank from pushing the main caps away from the block when the block and caps are strong enough, but not connected well enough. Not the problem.

The blocks were not made of strong enough material for as thin as it is under the high compression and vibration. Having the oil squirters cut into it on turbo blocks only worsened the problem.

If the main webs are cracking the lock and stitch will repair it enough to hold, but the real fix for the older blocks is being lucky enough to find a good condition higher mileage block. The hammering and heat creates a "piened" effect. So back to the lottery theory.

The real fix is the optimizer engines that are a little beefier thickness with a much improved metalergy. They don't break.

One other thing to know is the harmonic balancer is a critical item. Many a 6.5 has lost the bottom end to a bad balancer. Good condition only, no doorman, and if at all possible fluid damper is still without fail afaik.

If you want serious capacity that is the magical p400. Break one, I dare ya! A couple buddies in the USMC got to due some abuse testing and basically you have to try to damage them. 300 ponies will not do it. One I watched them do was a twin gm8 set up with a built db2 and blasted the head gaskets at almost 55 psi @4,000 rpm. Up armoured hmmwv dragging a sled. Only lost headgaskets. TTY head bolts, I wonder if they had studs and victor +10 gaskets what it might have changed.

 

[jbb421]

Well mines got 210k on it let's hope she hasn't given in. And is perfectly fine when I pull the oil pan seems like that's the only way I can afford to do this. I'm hoping to stay under the 2500 mark so I can afford new suspension parts also.

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[dieselfuelonly]

If you want serious capacity that is the magical p400. Break one, I dare ya! A couple buddies in the USMC got to due some abuse testing and basically you have to try to damage them. 300 ponies will not do it. One I watched them do was a twin gm8 set up with a built db2 and blasted the head gaskets at almost 55 psi @4,000 rpm. Up armoured hmmwv dragging a sled. Only lost headgaskets. TTY head bolts, I wonder if they had studs and victor +10 gaskets what it might have changed.

Wow! Now that is impressive!