what machine work should i have done

AlexGsxCummins · Aug 29, 2015

so i called the best local machine shop and talked with them and i feel like they were trying to get me to buy more then what i need (who would have guessed). So my plans with the car is capable of 600whp as that is my end goal but not my current goal. so i have the bare block and head i just want this guy to do the machine work and i have a close friend who's a mechanic that will help me with the assembling of the motor to make sure i don't screw it up. just for instance he was telling me that i should have the head ported, machined for 1mm over valve ext, just naming everything in the book. correct me if im wrong but i thought all that is for the higher hp guys out there. this is not a dsm shop btw but it does sound as though he has done a few of these motors. he was also trying to tell me it would be better if he assembled it i feel like that's just more money he's trying to get

BogusSVO · Aug 29, 2015

Porting always helps, and with the big valves that can help too, as long as they are installed correctly.

Machine shops are generally better equipped to do assemblies than mechanics.

what all was on the list that he wanted to do?

donniekak · Aug 29, 2015

AlexGsxCummins said:
so i called the best local machine shop and talked with them and i feel like they were trying to get me to buy more then what i need (who would have guessed). So my plans with the car is capable of 600whp as that is my end goal but not my current goal. so i have the bare block and head i just want this guy to do the machine work and i have a close friend who's a mechanic that will help me with the assembling of the motor to make sure i don't screw it up. just for instance he was telling me that i should have the head ported, machined for 1mm over valve ext, just naming everything in the book. correct me if im wrong but i thought all that is for the higher hp guys out there. this is not a dsm shop btw but it does sound as though he has done a few of these motors. he was also trying to tell me it would be better if he assembled it i feel like that's just more money he's trying to get

600hp out of a 4-cylinder is higher horsepower. The Internet has ruined everyone's view on what high horsepower, or a fast car is.

I have no idea what quality work your machine shop does, or your mechanic friend. But, I do know it's much easier to delegate blame after a failure when one entity does the whole build. Typically a builder will blame the machinist, and the machinist will blame the builder, with you being stuck in the middle.

BogusSVO · Aug 29, 2015

Donnie... You forgot, they both would blame the guy who did the dress out of the engine or the install add the tuner was at falut too.

There are so many things that can go wrong on an engine build.

AlexGsxCummins · Aug 29, 2015

he was naming, balance, hot tank, hone/bore, resurface, magnaflex, porting, he named off more but i cant think right now, he said it will be a few grand just in machine work.

and i didn't mean 600 hp is not a high hp car, it is. i was talking about the real high hp track cars

and if anything goes wrong its my fault i want to be the one to assemble the motor. my mechanic has owned his own shop for 23 years so i trust him to watch me and give me tips to make sure i am putting it together right. but all in all. its my build if something is wrong its my fault, if i wanted to blame someone for when something brakes i would just go drop my car off at a shop and pay to have it built

Archer Fabrications · Aug 29, 2015

You dont NEED porting, and you dont need aftermarket valves or over sized valves. My machine work was only 1100 ... I didn't have too much done either. Magnaflux, overbore,torque plate hoan, line hoan mains for the arp hardware, hot tank, glass bead, balanced the rotating assembily and micropolished the crank the head jist had a good cleaning and a 3 angle valve job. There was a few more but i cant remember, like decking head and block 600whp is a lot of power but it still has been made on basic setups. It's not to say the extra work wouldnt be beneficial in making power easier. It's just not something thay you NEED done. In my opinion oversized valves are more beneficial AFTER 600whp, i dont have them, but it wouldnt hurt anything to have them.

AlexGsxCummins · Aug 29, 2015

that's how i was feeling, i know everything helps, shoot on a complete stock car it will help but not needed. im not trying to skimp out on parts of this build but also im not made of money im trying to save on the places that i can

BogusSVO · Aug 29, 2015

Ok, for the basics,

Block work

Clean
Deck the HG surface
Bore
Hone w/torque plate
Port front oil galleys
BS bearing flip
Check line bore of mains

Crank

Remove oil galley balls
clean crank
Polish/grind as needed
Plug oil galleys

Rod/pistons

Weight match to .1g

Head

Tear down
Junk the stock valve springs
Check and replace the guides as needed
Use only Factory "6T" Valves or go stainless
clean the head
( pick head up from shop and do some basic clean up of the bowles and runners if you are equipped and can do so)
3 angle valve job
back cut valves
oil port mod 1
Deck head
Assemble head, set tip height and set spring installed height

To me this is the basics that need to be done on any build.

bastarddsm · Aug 30, 2015

Crack check the block and crank

bastarddsm · Aug 30, 2015

UrbanSmoker said:
In my opinion oversized valves are more beneficial AFTER 600whp, i dont have them, but it wouldnt hurt anything to have them.

Suprisingly it has more to do with rpm and displacement than hp. High rpm warrants big valves more than big power. All though At super high power the fuel volume
Becomes so large that it eats up a bunch of the total flow....

AlexGsxCummins · Sep 8, 2015

Alright so I just called them back up just now and asked them again on a quote. They said they won't assemble the motor witch to me sounds like mate the head to the block. They said a estamate of 1900, for all the head work, block work, and crank, balanced blue printed. No porting just 3 way angle grind, bore, hone, main hone, all the works. Boostin performance head and block are sounding better and better. Or is this typical price?
Edit: They won't assemble the motor because I'm providing all the parts I want

darknezz7 · Sep 8, 2015

To give you an idea

We had the better (at the time now their 15yr machinist is gone) machine shop install the 1mm os valves 3 angle, do oil port mod and surface head that was about $300.

Had them deck, hone block, install the plugs into 4g64 block for dohc swap, polish crank, balance and put together rotating assembly that was around $600.

So $900 total for head and block.

The cheaper shop would have been around 600 total.

Sounds like a lot man....

Boostin's block is a great deal

AlexGsxCummins · Sep 11, 2015

I went down to west bay because they have a machine shop I was kinda worried about a part store doing the work but just talking with the guy that runs that part seems like a nice and intelligent guy. I told him my 1900$ quote and he just said "that's alot for machine work" so that made me feel good to. He said he can do anything besides grind the crank but he can check if it needs to be grinded I think I'm going to trust him with my motor.

Archer Fabrications · Sep 11, 2015

By assemble they mean they won't install anything, not your crank not your pistons not your rods not your valves not your valve springs.

darknezz7 · Sep 12, 2015

Ive never heard of a shop that wont assemble it just cause your providing the parts.. I always bring parts for the shop to put in. The only thing different with the 4g64 motor was they said no warranty at all since it was a custom "race" build. I understand and accept that.

BogusSVO · Sep 12, 2015

Some shops are like that, for different reasons,
Builder may not like a brand
They want you to buy parts thu them

Also if a part you supply fails, they are not responsible.
Some shops will charge extra to install parts a customer provided.

AlexGsxCummins · Sep 12, 2015

the guy at napa just said 'its your baby ill put whatever you bring me on" that's more like it =)

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what machine work should i have done

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