Why is MMR frowned upon?

[Deuce33]

I recently made a post on FB asking which engine should I go for if making big power was my main goal. I mentioned MMR (Modular Motorsport Racing) and the comments section basically roasted me. What's the deal with MMR? Do their engines blow up more regularly than others or something? I haven't personally heard anything negative but apparently they aren't great.

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[Grimreaper]

No personal experience but from what I've seen others sharing on here:

Suspect oil pump gear quality/ finish
Quality issues with trigger wheel
Timing chain tensioner quality issues
Timing chain guide wear in track use

Have not heard of issues with their actual engine builds.

 

[NGOT8R]

I’m using their rear seal plate kit (with new Viton seal, trigger wheel and replacement FoMoCo crank sensor), IMRC lockout kit, head cooling mod and engine block braces.

The only thing I had to modify was one of the IMRC lockout pieces, which was very simple to do.

I would buy one of their engines, but make damn sure I properly clearanced anything that needed it, if something appeared to be off.

 

[UncleSams_SVT]

There are many people out there that have had really bad experiences with MMR engines. Hence the hate for that company when you start talking to the high HP mod motor crowd.

There are quite a few that also have issues with the red coating on their parts coming off and causing other problems.

 

[Deuce33]

There are many people out there that have had really bad experiences with MMR engines. Hence the hate for that company when you start talking to the high HP mod motor crowd.

There are quite a few that also have issues with the red coating on their parts coming off and causing other problems.

Hmm, are there any other high HP Coyote options? (We're talking 3000+hp) My Plan B was a 481x but using a Chevy based engine in a Mustang feels wrong.

 

[BlackandBlue]

Wait are you comparing a 481 to coyote?

That’s kinda apples to spaceships comparison.

 

[2morrow]

I’ve found Facebook to be the land of trolls and misinformation.

You could be talking about a unicorn with Jesus mod that walks on water and someone will inevitably come out from under a rock and crap on your thread.

OP, I think your doing the right thing consulting the forum

 

[Deuce33]

Wait are you comparing a 481 to coyote?

That’s kinda apples to spaceships comparison.

The MMR Gen X and the 481x offer pretty similar power outputs from what I've seen.

 

[SolarFlare]

3000hp? Lol

 

[SSG 5.0]

3000hp? Lol

Really deep pockets lol. I’m sure it’s achievable and good luck to op building that bad boy. Hopefully he shows the car one day.

 

[nnnnnn]

Whichever builder you use, make sure you know how long the build will really take.

I don't have any experience with MMR but listening to people about their bad experiences about something they bought may or may not be applicable to your situation. I would take the experience of someone who has bought their assembled engine and used it compared to someone who just bought a single part from them then proceeded to self install, maybe they didn't install things correctly.

With that said, I will highly recommend RPG Engines to be your engine builder due to quality of work.

 

[Deuce33]

3000hp? Lol

Drag car.. go big or go home right?

 

[NGOT8R]

Anything can happen in the racing game. Even the best built and most expensive race engines blow up. It’s just a risk we all take when modding our cars. Just try and put together the best package that you can and hope for the best.

 

[Balr14]

Back in the old days, If it didn't blow up, you weren't pushing it hard enough. So, you rebuilt it and tweak it just a little below where it blew up the last time.

 

[NGOT8R]

Whichever builder you use, make sure you know how long the build will really take.

I don't have any experience with MMR but listening to people about their bad experiences about something they bought may or may not be applicable to your situation. I would take the experience of someone who has bought their assembled engine and used it compared to someone who just bought a single part from them then proceeded to self install, maybe they didn't install things correctly.

Or build it himself. The guys that build these engines aren’t necessarily the only ones, who can do it. Willpower and a research will go a long way when a person is dead set on accomplishing something. Mind over matter.

I’ve been here at a place like this before several times, but with motorcycle engines and most recently, my MT82-D4 transmission. I elect to do things myself because it seems like more and more, many companies are interested in helping themselves to a lot of money, before helping the customer. That in and of itself, is more than enough motivation for me to give anything a try.

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