101K Mile Motor. What should I worry about.

[EFI]

Why would I need cams to rev to 8k?

Because stock cams with 18 manifold the power will fall hard after 74-7500.

You need a CJ or cams to efficiently pull to 8000+

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[tdstuart]

Because stock cams with 18 manifold the power will fall hard after 74-7500.

You need a CJ or cams to efficiently pull to 8000+

Ah, I looked at some more dyno graphs and see what you mean about the fall after 7,500. Although depending on gearing it may be beneficial to still rev to 7,800 or even 8,000. Idk ill talk to my tuner about it.

 

[wazslow]

I won't be able to see the cams or the timing chains LMAO.
Look at the picture attached...

With a borescope I can just pull out the spark plugs and check the cylinders...

Why be so rude when you don't know what you are talking about?

I'm not sure how you took my comment as rude.

The valve covers nor timing cover has to come off for the intake manifold swap. I have already done all of this myself including oil pump gears and crank sprocket, twin turbos, fuel system, etc. Clearly it's you that doesn't know what they're talking about.

 

[tdstuart]

I'm not sure how you took my comment as rude.

The valve covers nor timing cover has to come off for the intake manifold swap. I have already done all of this myself including oil pump gears and crank sprocket, twin turbos, fuel system, etc. Clearly it's you that doesn't know what they're talking about.

You are right my bad. Don’t know why I mistook the valve covers for the intake manifold.

 

[illadvised]

Why be so rude when you don't know what you are talking about?

I don't think he was being rude. You specifically said "what should I check while I have the mani off of the car". None of that other stuff can be done just because you have the manifold off of the car. He was correct

 

[tdstuart]

I don't think he was being rude. You specifically said "what should I check while I have the mani off of the car". None of that other stuff can be done just because you have the manifold off of the car. He was correct

Ya I don’t know why I started thinking of the valve covers, he is right.

 

[Red65]

From what I’ve seen the porting does give more top end. And from what I’ve seen even if it starts to drop, it isn’t tanking after 7,500. Maybe I’ll put it on a dyno but I don’t see why the manifold would make me only want to run it to 7,600.

This is on a Gen 2 engine so it’s more of an appropriate comparison. Most of your gains will be in the mid range, and the little that it helps up top helps it above 7000 but there’s no reason to rev to 8k with that setup. As others have stated, cams and a cobra jet are needed for 8k to be usable and worth it.

 

[tdstuart]

This is on a Gen 2 engine so it’s more of an appropriate comparison. Most of your gains will be in the mid range, and the little that it helps up top helps it above 7000 but there’s no reason to rev to 8k with that setup. As others have stated, cams and a cobra jet are needed for 8k to be usable and worth it.

I looked up some graphs with a gen2 and ported 2018 and they showed no quite as bad of a drop off as that graphs leads us to believe. I’ll probably end up putting the car on a dyno after the mods and I’ll see how bad it is.

 

[Rapid Red]

Just asking for things I should be looking for. Not asking for a list of parts to throw at it.

For example should I check the cylinder walls? What are common things that fail that I should check? How do I check that my block is holding up fine. Do I have to worry about my cams, or valves, or etc.

Just saying what's going to take to get 8k, was not a suggestion, you want 8k that's your answer
Nothing else

 

[tdstuart]

Just saying what's going to take to get 8k, was not a suggestion, you want 8k that's your answer
Nothing else

What I was meaning was how to make sure the car won’t blow up when revving to 8k. Are you saying if I don’t get cams the car will break?

 

[Rapid Red]

What I was meaning was how to make sure the car won’t blow up when revving to 8k. Are you saying if I don’t get cams the car will break?

Rev limiter will do that, I misunderstand/misread your post, no worry .

 

[tdstuart]

Rev limiter will do that, I misunderstand/misread your post, no worry .

Yes I try to stay away from the rev limiter. And your good, cams is would complete the N/A build but they are expensive lmao

 

[tdstuart]

If it's not broken don't fix it is the N. American mantra haha.

Just afraid when it does break, it will all break.

 

[tdstuart]

Dump the car then. The engine is the last thing to fail you will go through thousands of dollars in other items first.

Remember these engines are pulling 300K miles in pick up trucks.

Truck engines also aren’t revving to 7,500 multiple times a day.

If you think that there is nothing I can check and prevent to help keep the engine going then okay.

 

[tdstuart]

Yeah but most of them get bagged, with poor maintenace, and many have stressful life hauling heavy stuff.

Get an oil and trans fluid analysis and ask the dealer if any TSB or service items that should also be in the manual.

It’s all good an maintenance. Next oil change is coming up so I may cut the filter apart and do an oil analysis.

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