Finished up my MMR build a couple weeks ago, and now have 800 miles on the new shortblock. Has no issues handling the 18 psi I'm throwing at it. Definitely a great company to deal with here!
hey mmr i just wanted to say all your personel are very very helpful and i never had a problem once asking questions. just wanted to say to everyone that looks at this thread i would highly recommend buying a mmr motor if you are looking for power...i just bought and installed a mmr 900 and its fantastic...havent had a problem so far....thank you for the great build mmr...i recommend them to everyone!!!!