What did you do to your TJ today?

[srimes]

Oh man, replacing six plugs must be sooooo nice. When I replace my plugs, I replace six plugs - and then I have to replace ten more!

Jeez, Hemi's suck!



Nice work.

Google says the 392 makes 485 hp. Divide by 16 gets 30.3 hp/spark plug. Multiply by 6 yields 181.9 hp.

You're hemi produces the same hp per spark plug as an early TJ 4.0.

 

[NashvilleTJ]

Google says the 392 makes 485 hp. Divide by 16 gets 30.3 hp/spark plug. Multiply by 6 yields 181.9 hp.

You're hemi produces the same hp per spark plug as an early TJ 4.0.

Except my Hemi does not make 485. Those are rookie numbers!

 

[srimes]

Except my Hemi does not make 485. Those are rookie numbers!

Well go on then, don't leave us hanging! How much?

 

[NashvilleTJ]

Well go on then, don't leave us hanging! How much?

Truthfully, at the flywheel I don't actually know. It's never been on an engine dyno. My engine builder, who has built many mills similar to mine - Molnar complete forged rotating assembly, 10.5 forged pistons, cam, and headwork - says it should do 550. As I said, I don't know but I do think it makes something north of 500. On the chassis dyno, it makes in the 390's at the wheels.

But, the fat pig eats up a lot of that just getting its heavy ass moving...

 

[Kilcarnup]

Crawled under it to take pics of the steering bits.. oh and renewed its insurance.

 

[Wildman]

Google says the 392 makes 485 hp. Divide by 16 gets 30.3 hp/spark plug. Multiply by 6 yields 181.9 hp.

You're hemi produces the same hp per spark plug as an early TJ 4.0.

So you're saying my little 345 HP 5.7 is under powered when measured per spark plug? Damn and I've spent all this money on doing a V-8 swap...

I'll throw it on a dyno after I do the 8HP70 swap.

Edit: FRP reports a 20-30 HP/TQ gain with the Hellfire 2.0 cam. Not sure what the Eagle heads add to it but I'm choking it down with the 03 intake too... So lets' just round that HP number up to an even 400 HP.

Hemi 400 HP divided by 16 = 25 HP per spark plug....

Four Angry Squirrels makes 120 HP divided by 4 = 30 HP per spark plug....

I'll go hand my head now... Should of just kept those 4 angry squirrels damn it.

 

[TheBoogieman]

Crawled under it to take pics of the steering bits.

 

[Weasellee]

A day of duds. Replaced spark plugs chasing what feels like an occasional rough engine - ones I pulled were in great shape.
View attachment 662843
Replaced both calipers chasing a hard turn to the left when braking hard. Did lines too. Process was fine but the right side caliper is leaking from the bleeder screw and no hope to replace until the auto store is open Monday. Smeared RTV all over it to try and tame the leak for the next couple days.
View attachment 662844
View attachment 662845
Any ideas what might cause that hard turn when braking? My next step was to rebuild the drums.

Someone else chime in. Those soft lines look possible twisted or at least not naturally bent. If they are “stressed” then n any way when turning the wheel the brakes could apply? I think so, @mrblaine ?

 

[Weasellee]

A day of duds. Replaced spark plugs chasing what feels like an occasional rough engine - ones I pulled were in great shape.
View attachment 662843
Replaced both calipers chasing a hard turn to the left when braking hard. Did lines too. Process was fine but the right side caliper is leaking from the bleeder screw and no hope to replace until the auto store is open Monday. Smeared RTV all over it to try and tame the leak for the next couple days.
View attachment 662844
View attachment 662845
Any ideas what might cause that hard turn when braking? My next step was to rebuild the drums.

Also, where’d you get those calipers? They look coated black. Are they the NAPA e-coated calipers?

 

[mrblaine]

Someone else chime in. Those soft lines look possible twisted or at least not naturally bent. If they are “stressed” then n any way when turning the wheel the brakes could apply? I think so, @mrblaine ?

They look just fine.

 

[noodles93]

Someone else chime in. Those soft lines look possible twisted or at least not naturally bent. If they are “stressed” then n any way when turning the wheel the brakes could apply? I think so, @mrblaine ?

I mimicked the original config for the lines I think I'm good there.

Also, where’d you get those calipers? They look coated black. Are they the NAPA e-coated calipers?

Yup the NAPA adaptive one calipers. Honestly haven't had great luck on them but I guess I enjoy the pain. On my 1st gen Tacoma when I did the Tundra brake upgrade I used the NAPA ones and within a year one failed.

Going to swap the old one back on today to get me through until NAPA is open tomorrow. Hopefully do the drums too before things start getting cold down here. Battery in my truck took a dump too, for once having 3 cars paid off still have 1 usable one.

 

[mjonesjr84]

Someone else chime in. Those soft lines look possible twisted or at least not naturally bent. If they are “stressed” then n any way when turning the wheel the brakes could apply? I think so, @mrblaine ?

They look just fine.

Could be a soft line and still look fine outside. I had one on my JK that looked fine on the outside but was not on the inside. After replacing a caliper thinking that was it, a new soft line fixed it. Internally it was swelled acting as a 1 way valve.

 

[mrblaine]

Could be a soft line and still look fine outside. I had one on my JK that looked fine on the outside but was not on the inside. After replacing a caliper thinking that was it, a new soft line fixed it. Internally it was swelled acting as a 1 way valve.

Except for the new part. While I suppose it is possible to get a 1 way valve going out of the box, it is statistically next to zero and it would create more than an intermittent pull to one side generally.

 

[mjonesjr84]

Except for the new part. While I suppose it is possible to get a 1 way valve going out of the box, it is statistically next to zero and it would create more than an intermittent pull to one side generally.

Didn't see he did new soft lines. Agreed that new out of the box lines probably aren't bad.

 

[srimes]

So you're saying my little 345 HP 5.7 is under powered when measured per spark plug? Damn and I've spent all this money on doing a V-8 swap...

I'll throw it on a dyno after I do the 8HP70 swap.

Edit: FRP reports a 20-30 HP/TQ gain with the Hellfire 2.0 cam. Not sure what the Eagle heads add to it but I'm choking it down with the 03 intake too... So lets' just round that HP number up to an even 400 HP.

Hemi 400 HP divided by 16 = 25 HP per spark plug....

Four Angry Squirrels makes 120 HP divided by 4 = 30 HP per spark plug....

I'll go hand my head now... Should of just kept those 4 angry squirrels damn it.

If you really want to dominate the HP/spark plug wars you gotta go diesel.

 

[John Cooper]

If you really want to dominate the HP/spark plug wars you gotta go diesel.

Just gonna throw this out there.......

Which diesel truck (class 8) had spark plug(s) on their engine.

 

[mjonesjr84]

Just gonna throw this out there.......

Which diesel truck (class 8) had spark plug(s) on their engine.

Old Cat engines had a small gas engine that was used to start the diesel so it had spark plugs. IH had a duel fuel engine that would start on gas and then switch to diesel.

 

[MtPockets]

Just gonna throw this out there.......

Which diesel truck (class 8) had spark plug(s) on their engine.

Man, John, I thought I knew it all but you stumped me with that one.

 

[Zorba]

Old Cat engines had a small gas engine that was used to start the diesel so it had spark plugs. IH had a duel fuel engine that would start on gas and then switch to diesel.

They used those on tractors, etc - but did they use them on trucks? I could see the IH gas over diesel setup on a truck, but Cat's pony motor wouldn't be conVEEEENient enough I'm sure.

 

[MtPockets]

Old Cat engines had a small gas engine that was used to start the diesel so it had spark plugs.

Old Deeres had a pony motor, too.