Cams, Springs, Retainers, and Nistune all on the way...

[SuperHatch]

I just got a hold of some Cams, Springs, and Retainers for my VH. I also purchased Nistune and an Ostrich w/ Socket booster.

I'll be swapping to 94 heads and lower intake runners when I install the cams. The heads will be getting decked slightly to ensure flatness and a fresh valve job.

I guess soon enough we'll be seeing what kind of power a cam'd VH can make... hold on tight!

[gs14racer]

Did you get teh mazworx stuff?

[T45]

Any news on how the Mazworx cams are performing?

[SuperHatch]

I figured I'd just give an update. I dropped my 94 heads off at M2 Race Systems this week for a race valve job, some mild hand blending, valve height checking, and cleaning. I should be picking them up either next week or the week after. I'll fully assemble the heads and install some time early February.

Stock 92 engine, the car went 11.9...

The lump sum of changes happeneing are as follows.

92 Siamese Port heads being swapped for 94 Oval Port headsPort Matching 94 lower intake runners to headsCams/Springs/RetainersNistune w/ Ostrich 2.0Slight change to intake setup.

Nothing else on the car will change for this coming season, so we'll see how much these cams and a good tune manage to drop my ETs / Increase traps.

FYI, I am Mazworx's "Guinea Pig" for these cams.

The specs on the cams are as follows...

Stock:

Advertised Duration 240* Intake, 240* ExhaustDuration @ 0.050" lift 177* Intake, 176* ExhaustMaximum valve lift 0.368" Intake, 0.355" Exhaust

Mazworx:

Advertised Duration 272* Intake, 272* ExhaustDuration @ 0.050" lift 185* Intake, 185* ExhaustMaximum valve lift 0.420" Intake, 0.420" Exhaust

The guys at M2 seem to think these cams should be good for ~30-50HP and another 2000RPM of useable power with a decent tune. We'll find out in the next month or so.

[T45]

Sweet, definately keep us informed. I'm thinking of insulating my intake mani when I drop another engine in. Maybe get a slightly cooler intake charge. Probably a waste of time but it couldn't hurt. I assume you're running full synthetic in everything? Have you pulled off all the vibration isolators off the trans mount and rear subframe? Few lbs to be lost there too. Awesome build, so jealous!

[SuperHatch]

Sweet, definately keep us informed. I'm thinking of insulating my intake mani when I drop another engine in. Maybe get a slightly cooler intake charge. Probably a waste of time but it couldn't hurt. I assume you're running full synthetic in everything? Have you pulled off all the vibration isolators off the trans mount and rear subframe? Few lbs to be lost there too. Awesome build, so jealous!

A cool intake charge is good, but just remember, warmer air in the runners promotes a better mix of the atomized fuel. Too cool and you could end up with problems too.

Actually, there is no synthetic in the car, they frown upon synthetics heavily at the track.

There are no vibration isolators on an S14... that's a Z thing. They'll be coming off of my Z soon enough though.

[T45]

Ah, good points on all. So you have like 15 spare VH's laying around eh? I'll be needing one soon...

[elwesso]

are these cam regrinds or what, or are the rewelds or whatever they call it... How are they making the cams?

[maxnix]

The guys at M2 seem to think these cams should be good for ~30-50HP and another 2000RPM of useable power with a decent tune. We'll find out in the next month or so.

Show us the pictures of the pieces!

9400 rpm won't be kind to engine life!

[SuperHatch]

Show us the pictures of the pieces!

9400 rpm won't be kind to engine life!

I'll post pics when I get the heads back from the machine shop...

when I said 2000RPM, I meant 2000RPM more powerband, not higher redline. The stock cams fall off a lot over 6300, I plan on seeing what this will do at 8000-8500 now.

[SuperHatch]

As promised, Got the heads back on Friday...

Cams, OEM Gasket Set, Head Studs:

Heads:

Retainer Closeup:

Oval Ports:

ARP Part Number if anyone is interested, you need two sets:

What was done to the heads:

I'm going away for a while for work. Won't get to this until the end of February. Sorry for being so slow, deal with it! lol

[maxnix]

I plan on seeing what this will do at 8000-8500 now.

Good luck! That's a lot of piston speed for that mass and rod strength.

[maxnix]

As promised, Got the heads back on Friday...

Pretty sorry cleaning job on your intakes!

I'd send them back.

[T45]

Pretty sorry cleaning job on your intakes!

I'd send them back.

Don't you have like a "discolored shift knob" thread to post in or something?

[CrazyTrance]

Any update on this thing? I'm really interested in what the power gains will be.

[maxnix]

Don't you have like a "discolored shift knob" thread to post in or something?

Should look like new.

Have you checked your diapers lately? I think they are full again.

"Member's standards vary." - Q45tech

[DJ Raijin]

I can't wait to see the results from these cams. I'm all giddy!

btw...those valves looked pretty spotless to me. I did see some dirt and stuff on the plastic overtop them though.

Also...what if you have earlier heads with the Siamese port job, can they be rounded out to the oval shape? or is it easier to buy new heads


Modified by DJ Raijin at 3:09 PM 2/26/2009

[SuperHatch]

Got the old heads pulled today. I'll put it back together next saturday and have some startup vids, I promise.

No, you can't ovalize the siamese heads to the same shape as the oval heads. You can make them oval though, but you have to oval the intake manifold too.

[Mettler]

Howcome you don't want us all to see how much you spent on that stuff? ;D

[DJ Raijin]

let's see some results! dyno graph pleeeeeeease

[tmorgan4]

x2.

[SuperHatch]

Didn't anyone ever learn to be patient?

I got one of the heads on Monday since we had a snow day and I had an hour or so of spare time. I'll be working on it again tomorrow afternoon and then again on Saturday. Hopefully I'll get it finished up on Saturday...

Dyno charts? You won't see any. What you will see is the change in Trap speed from the stock setup. Thats a better indicator of power gained than any dyno.

[PanzerAce]

Dyno charts? You won't see any. What you will see is the change in Trap speed from the stock setup. Thats a better indicator of power gained than any dyno.

Actually, whp dyno charts are the best way to see a power gain, since trap speeds are going to depend heavily on ambient temp, humidity, tire wear, track temp, how you drive, etc

[SuperHatch]

Actually, whp dyno charts are the best way to see a power gain, since trap speeds are going to depend heavily on ambient temp, humidity, tire wear, track temp, how you drive, etc

We will agree to disagree on that one.

As a matter of fact, you might even disagree to disagree, and I still won't care.

[DJ Raijin]

Didn't anyone ever learn to be patient?

I got one of the heads on Monday since we had a snow day and I had an hour or so of spare time. I'll be working on it again tomorrow afternoon and then again on Saturday. Hopefully I'll get it finished up on Saturday...

Dyno charts? You won't see any. What you will see is the change in Trap speed from the stock setup. Thats a better indicator of power gained than any dyno.

I'm trying to be patient but I'm all like..giddy and stuff

But it would be nice to know what the numerical gains are on these things. The machine shop estimated 30-50whp and 2000rpm more worth of powerband.

How are you going to tune the thing then?

[SuperHatch]

How are you going to tune the thing then?

Nistune and a wideband...

[Raxephon]

No, you can't ovalize the siamese heads to the same shape as the oval heads. You can make them oval though, but you have to oval the intake manifold too.

Why not?

That statement can be quite misleading without the addition of details.

[SuperHatch]

Why not?

That statement can be quite misleading without the addition of details.

If you look at the siamese ports, the outside edges of the two circles are wider than the width of the oval port in the later heads. Yes, you can connect the two circles together, but if you try to use the late intake runner on it the resulting oval port on the head will be wider than the oval port on the runner by a substantial amount.

You would then need to ovalize the runners on the siamese port intake manifold to match, it's the best way. I can take pictures if you'd like...

[Raxephon]

For me, no, it makes perfect sense.

But for others that might be in search of said info, it wouldn't hurt.

I don't recall this being covered in another thread.(Although its quite possible that Dixon did cover this subject in his build up & I'm simply getting forgetful).

To summarize: Thank you

[T45]

There is one gent on here that ovalized his siamese heads and runners, can't remember who though.