300 HP, How to Assemble Our Engines Engine Builders Chime In

[Benjamin A.R.]

I made 2 videos showing how I built up my M10. The goal for this one is 3 times the power the 1975s left the factory with. I'm asking to see if anyone has any other tech tips or whatever that I should include in this series. I think I explained things pretty thoroughly, but I may have missed something since this is my first "ground-up" M10 build. Let me know what you think!

 

Edited January 10, 2021 by Benjamin A.R.

[Benjamin A.R.]

 

[Benjamin A.R.]

 

Edited January 10, 2021 by Benjamin A.R.

[Preyupy]

If you are using the ARP head studs DO NOT USE THE SPECIFIED TORQUE OF 90 ft/lbs!  You will CRUSH the cylinder head around the rocker shafts!  With the fine thread at the nut end of the stud 65 ft/lbs is more than enough to keep the head gasket (MLS) in place. 

[Benjamin A.R.]

 

2 hours ago, Preyupy said:

DO NOT USE THE SPECIFIED TORQUE OF 90 ft/lbs!  You will CRUSH the cylinder head around the rocker shafts!

Too late haha. The machinist I was working with said 110nm so that's what they got. I didn't notice anything odd, felt fine. Did 3 steps with a wait period in between. Under what circumstances did you find this occuring? It's such a tight fit I would think that the rocker shafts would provide enough support. 

[Benjamin A.R.]

Gotta love it when the manufacturers instructions may be wrong. Damn... at least I have a bunch of heads on the shelf.

[gary32]

On 1/9/2021 at 10:39 PM, Benjamin A.R. said:

I made 2 videos showing how I built up my M10. The goal for this one is 3 times the power the 1975s left the factory with. I'm asking to see if anyone has any other tech tips or whatever that I should include in this series. I think I explained things pretty thoroughly, but I may have missed something since this is my first "ground-up" M10 build. Let me know what you think!

 

Are you trying to compile information on a M10 300hp boosted build or are you following a model by others?

I know of 2 boosted M10's but 200 rear wheel hp is really all that was safe and reliable.

 

My last M10 2 liter, 292 cam, head port and polish ccd 10.25 compression, 40 dcoe's put 121hp to the ground and is still running well with 1 head refresh and 120k miles. This was assembled over 20 years ago when parts were easier and cost less. I see all kinds of hp and dyno numbers here that seem a tad optimistic. 

 

Looking forward to your results.

[Benjamin A.R.]

I'm trying to document the process as much as I can. The hot ticket is going to be E85 or lots of water-meth, 91 isn't going to cut it safely in my opinion. It's all in the tune, unfortunately that's one of my weaker areas of knowledge, but I made it this far. The M10 has insane potential that for the most part isn't accessed much in the US.

[Benjamin A.R.]

 

[Benjamin A.R.]

 

[Benjamin A.R.]

 

[jimk]

Flex fuel sensing - Haltech video

 

[gary32]

How many hours (or minutes) do you get out of each of these motors?

An M10 with 200hp at the rear wheels I know can be a 100k mile motor with some care and disciplined maintenance.

It just depends what your goals and budget are but you have to be realistic.

 

Or drink some Koolaid.

 

[Benjamin A.R.]

Flex fuel sensors are amazing these days, I may incorporate one in the future.

 

 

[Benjamin A.R.]

2 hours ago, gary32 said:

How many hours (or minutes) do you get out of each of these motors?

If this were 1989 and I were playing with K-Jet I would be more concerned. I've been running 10 psi on my bone stock 200k+ mile M10 for the past 10,000 miles... smacking the limiter most of the way. The engine doesn't care at all. I never even strapped it to a dyno, it's street tuned. I don't buy the narrative that M10s are delicate and you're on borrowed time.