Im starting to wonder what the hell I put in my car . . . prolly a hot cam lol

 

Well I just want to give big PROPS to Dave and Jayson at MTI for sorting out this misshap.
They agreed to send me a double roller adjustable chain FREE, to make up for it.
Super customer service if you ask me.
Again thanks to both of them for the way they handled my situation.

I can't wait to slap that cam on and try it out (straight up all the way)

To both of them, and all the forum members that helped me pass the message.

 

Glad it's sorted too cause I want to pick one up . A proper ground one that is.

So, does Lunati grind these on an XE-R lobe?

Dan

 

Don't know!! Colonel's original was.
The cam card doesn't give the .006 lifts, I will find out soon, just got to gather more info. But it's close, my aproximate calculations on the ramp rate came to 49 which is in XE-R territory, but I cannot confirm untill further exact data.

 

Looks like I got one of the mis-ground cams as well. I bought it for my gf.

 

About the peaking at 5900 thing...

1. I don't know that a 224/112 usually peaks at 6200. Maybe they do, I've never had one.

2. You could just as easily say that mine peaks at 6400 as it does 5900. The graph is straight across with several tiny "peaks" across this range.

About Lunati doing these cams...

1. Mine is a Comp.

2. Lunati has done all the rest.

3. They are supposed to do them the same as the XE-Rs. I firmly believe that any minor differences are inconsequential (not speaking of the whole +4 thing.)

 

Yeap, same as mine. When did you get yours???
How does it perform? Assuming you installed it.
Any Dyno graphs?

 

Yes it was installed. The cam performed better than the 224/228 571 591 112 that was in it before. She knocked off 2 tenths off her best time. The only complaint has been some surging which that could be just a tuning issue. We havent dynoed it yet. She did 380 + with the other cam and LS6 style heads.

 

The little SII went faster than the 224/228 ??

 

Yeah that surge is a result of the 4* advance. It shouldn't do that straight up. Tuning will definately get rid of that. I would say she definatly made more power down low, so she probably got a better 60'
How about trap speed? Did she pick up any? That would be an indication of more power over the 224/228 112lsa.

 

On that car .2 sec. Driving could make a difference as well as temps and DA.

 

Nice to see the sponsor's making things right.
**** happens, it just all depends on if the **** is cleaned up or left to smell.

 

Just an update .

I dynoed the car yesterday with the sII cam and stock heads.

Supporting mods are ;

Kooks Long tubes
Kooks catted Y pipe
SLP Loudmouth
Meizere EWP
Jantzer TB
K&N FIPK
ASP Pulleys

It did 390 RWHP / 372 RWTQ and peaked at 6000 rpm which surprised me but carried about 380 rwhp from 5500 - 6500 rpm

It was HOT and humid when we dynoed ( 2:00 in the afternoon ) so Im going to schedule another run earlier in the morning and see if I can break 400 / 380 cam only. These are corrected numbers but Im not convinced the correction works all that well but well see

 

Not bad at all for cam only.

As far as the differences (lunati/Comp) being inconsequential, maybe your right, but I would like to see one of the Off the shelf cams in your car to know for sure. Are VE's identical between the two??

Dan

 

She went quicker, but mph did not go up....the SII has more down low, where as the other cam pulled like crazy up top, but the drivability sucked.

Her best mph with the 224/228 was 115.1+ and with the SII 113.4+ similar conditions...I think it was a little warmer on the 113 though......
She just found her TS's
224/228
1.872
5.189
7.92
89.718
10.266
12.241
115.133

224/221 SII
1.668
4.923
7.662
89.285
10.023
12.040
113.493

Kudos to MTI, they emailed me before I had a chance to call them

 

Huge difference in 60' time...The stealth seems like it falls off quite a bit on the top end, especially compared to the colonel's 121 MPH trap speed in his A4. Maybe if you retard it 4*, you can get back some of that MPH..

Dan

 

Well, just got the replacement cam from MTI...They , or I should say Lunatti, sent the same exact cam as before

 

DOH!!!!!

 

I have an old Stealth I that always lopped hard and had a very high power band. Turns out after degreeing every cylinder ... that some lobes were ground wrong and the cam was running 4 degrees retarded (which moves the power up). The card I got with the Stealth I cam said the cam was ground 4 degrees advanced? Cylinder 1 was but not the others...been going crazy trying to find out why it can't be tuned to idle better. Turns out it was the cam all along. David Coates sent me a new cam last week, a Stealth II cam. This time the cam card said 224in/221ex duration on a 116 LSA with .576 in lift and .581 ex lift. But when I degreed it. The cam cam out to be 3.5 degrees advanced with 220 intake duration and 220 exhaust duration on all except cylinder
#8 which had 223 intake duration. The valve lifts were also off on some of the intake valves .576 vs .571. Kind of weird. So I called and talked with wayne and he confirmed they had a batch of bad grinds...and I was unlucky enought to get a 2nd one. So they are overnighting another StealthII cam. Wayne said they would check it before sending it to make sure it was ok. I am looking forward to getting the car back together and running right. The only way to know if a vendor is good is to have problems and see how they handle them. MTI is by far the best experience I have had when it comes to handling problems. I have dealth with Rick, Wayne and David...and they all are really helpful. I am just glad I am not the only one with these troubles. I thought I was going mad and have lost my ability to read a degree wheel, or my dial indicator gauge is going bad. I repeated the measurments and just kept scratching my head. Glad to know I am not going crazy.

 

Seems like quite a few people are saying their 'Stealth' cams lope pretty hard. Did you guys have the car tuned? Should it lope like that? What are the valve events of the cam?