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1.6 rockers w 252H Cam by jediperk
Started on: 05-29-2015 09:24 PM
Replies: 9 (172 views)
Last post by: fieromatty on 06-01-2015 02:45 AM
jediperk
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Report this Post05-29-2015 09:24 PM Click Here to See the Profile for jediperkSend a Private Message to jediperkEdit/Delete MessageReply w/QuoteDirect Link to This Post
Any one have the 1.6 rockers and the 252H camshaft in their stock V6 engines? If so, how do you like it and how much of a difference did it make?
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Report this Post05-29-2015 10:52 PM Click Here to See the Profile for fieromattyClick Here to Email fieromattySend a Private Message to fieromattyEdit/Delete MessageReply w/QuoteDirect Link to This Post
I have the same cam with 1.52 crane roller lifters and I can't say I feel any difference over the stock one.
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Report this Post05-30-2015 10:01 AM Click Here to See the Profile for jediperkSend a Private Message to jediperkEdit/Delete MessageReply w/QuoteDirect Link to This Post
Are you running the stock upper intake manifold?
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Report this Post05-30-2015 01:01 PM Click Here to See the Profile for fieromattyClick Here to Email fieromattySend a Private Message to fieromattyEdit/Delete MessageReply w/QuoteDirect Link to This Post
Yes, I am running the stock intake. I did have some port work done on the heads as well.

I won't say there is no performance gain, but it is minimal. I have forget pistons in it as well hoping to do a turbo build here shortly. What are you looking for with the cam upgrade?
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lou_dias
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Report this Post05-30-2015 01:53 PM Click Here to See the Profile for lou_diasClick Here to Email lou_diasSend a Private Message to lou_diasEdit/Delete MessageReply w/QuoteDirect Link to This Post
http://www.compcams.com/Com...ls.aspx?csid=56&sb=0

Looking at the specs, it doesn't provide much over stock with 1.52's and has a short duration...
.430" lift with 1.52'a and better with 1.6's at almost .453"
500-4500 rpm range - YIKES!


The 260H is better with a 1000-5000 rpm range and .293" lobe life before rocker multipliers vs. the 252H's .283"
http://www.compcams.com/Com...ls.aspx?csid=55&sb=0

Crane and Engle make better cams for our V6...
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Report this Post05-30-2015 03:47 PM Click Here to See the Profile for jediperkSend a Private Message to jediperkEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by lou_dias:

http://www.compcams.com/Com...ls.aspx?csid=56&sb=0

Looking at the specs, it doesn't provide much over stock with 1.52's and has a short duration...
.430" lift with 1.52'a and better with 1.6's at almost .453"
500-4500 rpm range - YIKES!


The 260H is better with a 1000-5000 rpm range and .293" lobe life before rocker multipliers vs. the 252H's .283"
http://www.compcams.com/Com...ls.aspx?csid=55&sb=0

Crane and Engle make better cams for our V6...


If I went with the 262 cam could I still use the 1.6 rockers or would I run into valve clearance issues?
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fieromatty
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Report this Post05-30-2015 04:48 PM Click Here to See the Profile for fieromattyClick Here to Email fieromattySend a Private Message to fieromattyEdit/Delete MessageReply w/QuoteDirect Link to This Post
We were discussing 1.6s a while back.
Check out this thread toward the middle / bottom...

http://www.fiero.nl/forum/Forum2/HTML/134577.html

[This message has been edited by fieromatty (edited 05-30-2015).]

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jediperk
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Report this Post05-30-2015 07:01 PM Click Here to See the Profile for jediperkSend a Private Message to jediperkEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by fieromatty:

We were discussing 1.6s a while back.
Check out this thread toward the middle / bottom...

http://www.fiero.nl/forum/Forum2/HTML/134577.html



Thanks for the line. Very informative and answered most of my questions...
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Report this Post06-01-2015 01:24 AM Click Here to See the Profile for lou_diasClick Here to Email lou_diasSend a Private Message to lou_diasEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by jediperk:
If I went with the 262 cam could I still use the 1.6 rockers or would I run into valve clearance issues?


The heads in stock form with flat top pistons support .510" with the stock gasket.
However, I don't think the stock springs support much over .450" so the Crane "double" springs are also recommended. The Fiero Store sells them.
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Report this Post06-01-2015 02:45 AM Click Here to See the Profile for fieromattyClick Here to Email fieromattySend a Private Message to fieromattyEdit/Delete MessageReply w/QuoteDirect Link to This Post
 
quote
Originally posted by lou_dias:


The heads in stock form with flat top pistons support .510" with the stock gasket.
However, I don't think the stock springs support much over .450" so the Crane "double" springs are also recommended. The Fiero Store sells them.


good information... but i wouldn't buy motor parts from the fiero store.

These are a good choice IMO
http://www.summitracing.com/parts/crn-99848-12
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