defect in the Merlin III block
 

defect in the Merlin III block Has anyone seen any defects

There is a break through from the drilling operation on the inside main bolt hole on the #2 main between cylinders 1 and 3. The drill depth broke through the main web and is visible as a small oblong hole in the web at the bottom of the cylinder bore.

Re: defect in the Merlin III block
 

Ouch........ :mad:

Re: defect in the Merlin III block
 

How was oil getting into the exhaust water?........ :confused:

Re: defect in the Merlin III block
 

Thanks for posting that.
I'll stay with GM blocks

Re: defect in the Merlin III block
 

I had a casting flaw in the fuel pump pushrod bore. Drove me crazy for a month. Had water in the oil every ride. Checked everything. Finally started taking every piece apart & pressure test individually. Pressure tested each side of the block seperately & water came out of oil pan (oil & plug were out). Had to tear it down completely deliver it to world & they fixed it. Needed new brgs, complete reasssembly etc. Thanks goes to the machine shop for taking care of most of it. Only thing world did was sleeve the hole. And the sleeve was too tight & had to be honed.

Re: defect in the Merlin III block
 

Wierd! It looks like it's even tapped all the way to the bottom, I think I can see threads.

Re: defect in the Merlin III block
 

light

Re: defect in the Merlin III block
 

My engine machinist swears by Dart... He does work on both and says the Dart casting is superior.

Re: defect in the Merlin III block
 

Wow ! What kind of aholes do they have working at the factory !
I know this is the factorys fault, but the person assembling the engine should have examined the bores better. I've taken apart several gm motors that ran fine. Found badly mis-stamped rocker arms, even a mag motor, with a rod journal that had a wide line across it due to not enough metal in the forging , This is crazy. World should go above and beyond to make you the customer satisfied. What kind of company that casts and sells new blocks that you pay big $$$ for, thinks they can make good by giving you a sleeve job. World should investigate this and find out who was on that shift when the block was machined, and discipline, and or drug test them. I have'nt heard bad things about dart , and was going to buy dart until I got a deal on a bowtie block. That really sucks. I feel for you guys . I'm sure there has to be something good about World though.... BBB

Re: defect in the Merlin III block
 

Don't want to stir the pot, but I was told that world and Dart us the same manufacturing lines (This was regarding heads).

Re: defect in the Merlin III block
 

Not to mention Merlin skimps on the most important ingrediant @ the foundry. Nickel... I had a DEFECT with a head and had a pinhole thru the water jacket in the exhaust port. Drove me nuts trying to find the source of milk shake.

Re: defect in the Merlin III block
 

The dreaded chocolate milk shake......... :eek:

Re: defect in the Merlin III block
 

I worked for World products [Bill Mitchell] and the blocks are no where near the quality of a Dart block big M.The problem with World is unhappy employees because you get treated like dirt, so there is a continual revolving door of different employees.Therefore the quality is in the s h i t t e r!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Re: defect in the Merlin III block
 

MY problem was a casting flaw, not machining. I found out the problem I had wasn't unheard of & decided to let them repair my block rather than replace it. If the new one was bad after I bored, honed, decked, assembled, & installed it again I would have been more than just pissed off. Thought it safer this way.