Hi there,

I've been browsing this site for quite some time, and I have found it very helpful. As my title states, I have a Camshaft question.

I went to a local Pick-A-Part and pulled a camshaft from a 88-91 Civic HB, but it wasn't an Si. I going to have it built up and reground at Colt Cams (local cam milling shop). I was wondering, will this cam fit into the A6 head, or do I need an Si camshaft?

I will put up some pictures once the cam shaft is clean (sitting in sink right now).

Thanks for your help,

Sheep

 

it will fit, but i dont think you are going to be happy with it. that is one of the things that makes an Si an Si. that and the tranny. it think you should just look for and Si cam. then Si cam is alittle bit more aggresive than the DX cam if i am not mistaken.

 

Oh, sorry I should have been more clear, the Cam is going to be reground to different specs. It will be a performance cam, without the price .

Thanks for your reply though, very fast and helpful.

Sheep

 

how do you make lobes bigger? is that possible? i know if you put an si cam in a d15b2 you have to use a d16y cam gear.. so you might have problems..

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by janz3n &raquo;</TD></TR><TR><TD CLASS="quote">how do you make lobes bigger? is that possible? </TD></TR></TABLE>

The lobes are welded to build it up then reground

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Crx Jimmy &raquo;</TD></TR><TR><TD CLASS="quote">

The lobes are welded to build it up then reground</TD></TR></TABLE>

oh ok..

next question. why bother ??

 

As Jimmy said, they will be built up, and ground to new specifications.

But the cam gear part is interesting... I have the cam and gear from that car, and I have my A6 gear in my car right now.

Does anyone know if the cam gear needs to change? Should I just get a new adjustable gear?

Ugh, 2 more posts and I'm done for 24 hours...

Sheep



Modified by Sheep at 6:38 PM 2/21/2007

 

dont go by what i say.. im jsut going by what iv read.. could be wrong.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">oh ok..

next question. why bother ??</TD></TR></TABLE>

From what I've read, an aggressive cam in the D16A6 is a great Hp gain for cheap. After market cams cost ~$200 dollars (US, I'm Canadian) and you don't have any say in how it performs. This way, you save money, and get a cam that gives you power where you want it (for me, mid - high end). Total Cost is going to be around ~$120.

EDIT: Here's what the cam looks like.





Sheep

 

nice volcano 12...

the d15 and d16 cam pulley are the same part. if your cam is going to be pretty aggressive, you may want to get a adjustable cam pulley to help with timing. if you are simply turning the d15 cam into a d16a6 cam, then you can just use the same old pulley.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sheep &raquo;</TD></TR><TR><TD CLASS="quote">

From what I've read, an aggressive cam in the D16A6 is a great Hp gain for cheap. After market cams cost ~$200 dollars (US, I'm Canadian) and you don't have any say in how it performs. This way, you save money, and get a cam that gives you power where you want it (for me, mid - high end). Total Cost is going to be around ~$120.


Sheep</TD></TR></TABLE>

hahahah ya i know what an aggressive cam is and what it does.. my question is why would you bother machining a d15b2 cam? just buy one.. its easier. or get a d16a6 cam. but i guess some people like the challenge

 

He isnt after the challenge. He just wants to make the d15 cam bigger. It was probablly cheaper and more readily available than a SI cam was. So why spend more money on a si cam just to change it later. I have done alot of work with D16a6 cams and heads, What cam specs are you using?

 

Guys, I HAVE an Si, but I couldn't get my hands on an Si cam (scrap yard had 1, and the head was gone). This cam will be built up more aggressively then a stock A6 cam. It will be like a performance cam.

From now on until I become a full member, I will update this post to reply to others(only get 5).

Sheep

Reply to Poundedhatchcrap,

I don't know yet, I need to call Colt Cams and see what they think. They have some experience, and I assume know what aggressive cams are like. BUT, if you have suggestions, I'm willing to hear them .


Modified by Sheep at 11:43 PM 2/21/2007

 

I remember several years ago when I had an 89si people on here said that the dx was actually more aggresive than the si? Did you search?

 

a6 cam gear and b2, b7, etc cam gears are the same. but you will need an adjustable one to get the 1.5 cam to work correctly in a 1.6 motor

 

Check out exospeed's sr909 cam. You could use the 1.5 cam as a core. They run about $150 USD and are said to be THE best mild A6 cam. I have a spare SI cam that I'm going to use as a core when I get around to a little head work.

 

honestly dood just buy a cam..

 

OT but nice computer!

 

hahahaha I love how you have a cracked copy of NFS Underground on your desk I have the same thing lol

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Sheep &raquo;</TD></TR><TR><TD CLASS="quote">

From what I've read, an aggressive cam in the D16A6 is a great Hp gain for cheap. After market cams cost ~$200 dollars (US, I'm Canadian) and you don't have any say in how it performs. This way, you save money, and get a cam that gives you power where you want it (for me, mid - high end). Total Cost is going to be around ~$120.

EDIT: Here's what the cam looks like.





Sheep</TD></TR></TABLE>


lol. u got ricer fans

 

http://www.norcalcrx.org/tyson/SOHC_Cam.html
This site has the cam specs you may be interested in thanks once again to the all mighty TYSON.
I have had both the SI and the ZC SOHC cam and there is a big difference in the ZC. If i were having one made i would use this as my template not the Si.

 

i so didnt look at the cd for the cracked nfsu i was looking at the beer bottles

But no MGD

 

I bought NFS:U2 after using that crack. The CD stopped working for some reason. You can't see it, but I have a cubby hole in the desk with Most Wanted, NFS:U2, NFS: Carbon, HL2, and HL2:E1.

As for the beer bottles, I only drink GOOD beer. Plus, that isn't even half of my bottle collection.

Thanks for the computer compliments, I bought the case already modded from my friend, and it came with the Blue LED fans in it. You can call my rig ricer all you want, but there is much nastier looking computers out there.

Now, back to the cam issue..

I don't want to buy a cam because its more money for nothing extra. If I need a cam gear, so be it, thats nothing. If the D15** core going to hold me back, well that's a differenet story? Does that cam have some sort of limit? I mean, the cam is going to be built up as much as I can get it while still having my car idle.

Thanks for all your help so far!

Sheep

 

I spoke with the people at Colt Cams, and they informed me about some issues with timing on the Camshafts.

Its nothing major, but apparently the US Si's were manufactured with 2 different cams that were 6 degrees apart. Some ran 3 degrees advanced, some 3 degrees retarded.

He said it would be a problem, but I will need an adjustable came gear to make the corrections.

I'll be getting in touch with them again to go over the grinding options they have.

Sheep

 

hmm, 6 degrees sounds about like the difference beteween the si cam and the dx cam.. im not aware of there being 2 different si cams.. has anyone else heard of this?

it would explain why there are 3 marks on the cam gear of the dx and si, the dx ones you line up 2 of the marks with the head to set timing, and the si you line up the lone mark with the arrow on the rear timing cover. the difference in angle between those 2 marks i would guess to be about 6 degrees, which may be why he said there are 2 different cams.

Tyson seems to know a lot about cams for the ef, maybe he can chime in to confirm or deny my statement.