Engine builder decides engine life!

And by lapping do you mean lashing?

 

Different things.

 

nah, lapping is what us old school engine builders do. I don't think these newer parts with their coatings like lapping though. The old standard valve seats and valves would wear irregular so you take a lapping compound which is like clay and you put it on the valve seat and put the valve on the seat and use a tool like a high speed drill and spin the valve in the seat so it basically polishes and wears the 2 surfaces to a perfect fit. It takes out distortions and small blemishes in the mating surfaces to get a good seal.

I think nowadays they just re-cut the valve seats and put new valves in. They have started coating valves and seats with compounds that don't require lapping so that's why I said if they don't have that coating you can lap them. I do it every time I tear down a bike engine for rebuilding. I don't have access to machinery to cut new seats nor is it cost effective on a small engine like that to have the valve seats machined over and over.

 

Huh! Learn something new every day.

Binder, The engine guy who i learned from just cuts the seats and gets new valves too, but ill ask him more about lapping, sounds interesting (hes oldschool as f***)

 

You can also take considerations of us. We are in Florida also and all the work is done in house.

Proven engine here

https://my350z.com/forum/forced-indu...ine-build.html

 

I talked to the mazworx guys more than a couple of times on the phone when I was seriously deliberating doing a sleeved setup, they know what they're doing.
Then I looked in my bank account, got lost in the massive void and couldn't afford it

 

Hey Guys. I'm tapping out... I am concerned that I build this motor and then experience the same fate down the road. Maybe I will start searching for C6 corvettes. Putting the car back stock and parting out everything.

 

your wallet will thank you, altho a basic bottom end build isnt to pricey

 

Yeah, I was looking at around 5-6k more which isn't the problem. The problem is what happens if that motor goes south? I'm done. I feel good about it. I want to eventually find a fast car that can be kept stock (or close to it) where I'm not throwing so many variables at it that something could go wrong and BAM.

 

you'll spend that difference in a vette aswell, but i hear you on the blowing up part

 

I personally would reccomend something awd and turbo.
Evo's are a bit kidish but damn they are fast.
GTR's are awesome obviously
stay away from subaru. boxer motors are even worse to deal with than our vq's.

my 2c
Can't blame you for ditching the game early! Not a bad decision imho! Good luck with the part out etc

 

Awd is zzzzz. Nothing more fun then a bucking car at 70+!

 

Nothing more fun than winning

 

havent came across an evo or gtr that will keep up yet and theres a 734 whp evo up here

 

Haven't found an evo that will walk me yet. There is an 800hp evo around here with double the money invested as my car and it took so long to build power he couldn't catch back up. If i remember he had a gt42. Midwestevos has quite a large group around here. I like most of the guys in the club that hang out but even seeing some of their built cars there isn't anything about them other than awd that I like. They have plenty of engine failures as well....just from their stories it sounds like quite a bit more than what goes on with us.

 

Huh, well all the 4g powered cars around here are sick and kick ***. I'd rock an evo 8 any day. If there's anything fast in my town, it's either Italian, a zr1, or has a 4g63 in it. Like 1 or two BPU supras, and a couple of nice 2j cars. STI's don't have gearing for anything past like 100 lol.
EDIT:
you wouldn't know what that evo's rev limit was would you? Some of them can rev out to 11k and still make power and do fine with HUGE turbos... Then they get those dogbox gears and setup the two step and you're royally f*ckd.

I'm sticking with this thing, but I'm almost sure the next chassis I build will have awd.

If you pour money into it? Lol with what I spent on my car, I put in an evo, I'd have an evo that'd be just as fast, maybe not top top speed, but traction out of the hole is cool, and on the highway with straight cut gears I'm sure it'd at least keep up. It'd hook which is the big big advantage.

A really cool car to build would be an s3, swap in a vr6 motor and turbo it...
like this guy
or this vr6 s4 (met somebody who knows the owner of this thing... not sure if it's still running)

the vr6 motor apparently swaps up to the awd setup without too much work.

 

ya, the awd makes them easier to get a low 60' but the downfall is lack of power in lower revs. I like the awd as long as i'm not the one fixing the parts that break on it with hard launches! lol

I think the 800hp guy (matt) runs an aluminum rod engine and was 10k rev limit. With that large of a turbo he says it doesn't spool until over 7k rpms. On a roll it was definitely noticeable. I'll have to ask him what he launches at the track with. It would have to be crazy high to come off the line with power.

Money wise stock block with low investment (turbo upgrade, injectors, e85, exhaust) the evo will give you a pretty good bang for the buck. I think they are high 300 low 400 with stock block and awd and since it's mostly upgrading parts it's less labor intensive. So there ya, it will be cheaper than the 350z going FI on initial investment and difficulty of upgrades. Going to big power though say 800hp 350z verses 800hp evo from everyone I know with high hp evo it was hands down more expensive than what I have invested. I'm sure buying an older used evo would help but i'm talking about just upgrade cost. On that note I can't believe that an MR evo costs in the 40k range! They are some cool cars but I don't think I would ever own them. I'm not happy with the spool time on my 67mm 3.5L so I would die with a 4 cylinder big hp lag! haha

 

Where's the 'do not like' button?

 

Agreed!