This is topic 1.6rr or 1.7rr with ecam and gt40heads in forum Tech Talk at Northern California Ford Owners  .


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Posted by 84SVOrick (Member # 9039) on :
 
Whats better for this setup?
 
Posted by jaejae (Member # 7958) on :
 
a diff cam...lol..kidding..i dont see going from 1.6's to 1.7s could have a bad effect?...unless you decide to run stock gt40 valve springs then yea keep the 1.6's...spend the money for the valve springs,,im running trickflow upgraded springs for gt40 heads..
 
Posted by 84SVOrick (Member # 9039) on :
 
So u say keep the 1.6rr i got and just upgrade to trick flow springs?
 
Posted by gercolla1 (Member # 3068) on :
 
sell the cam get a b303 install it 4degrees retarded with 1.6 that with the gt40s will walk on that e303 with the same heads [patriot]
 
Posted by SmokinLX (Member # 1684) on :
 
If You hav'nt picked up the E cam then pick a different cam. If You already have it then use it, not bashing anyone with this cam I ran it back in the day Myself [Embarrassed] .
 
Posted by 84SVOrick (Member # 9039) on :
 
I love my e cam lope and i got used to the powerband. If i decide to go a different cam wut do u guys suggest?
 
Posted by jaejae (Member # 7958) on :
 
quote:
Originally posted by 84SVOrick:
So u say keep the 1.6rr i got and just upgrade to trick flow springs?
naw im sayin going from 1.6's to 1.7's wouldnt hurt it..but its up to you if you wanna spend the $$ on the gain in power..but i would look towards a diff cam..im sure you will like the b cam..hella grunt..perfect for donuts..great low end
 
Posted by copcar (Member # 10113) on :
 
Advance to 106 cl and 1.7's on exhaust. Old Ecam trick
 
Posted by 84SVOrick (Member # 9039) on :
 
quote:
Originally posted by copcar:
Advance to 106 cl and 1.7's on exhaust. Old Ecam trick
Wut???
 
Posted by copcar (Member # 10113) on :
 
+4*, As installed with degree wheel (ICL) 106 icl v. 110 (straight up) and 1.7's on the exhaust, 1.6's on the intake.
 
Posted by Notch_notch (Member # 8902) on :
 
what the different 0* to 4* 4degrees retarded....
 
Posted by copcar (Member # 10113) on :
 
0* would mean installing it straight up (110 cl). In my post I suggested installing at 106 cl (4* advanced). I would never install an Ecam retarded, but in short, retarding delays the valve events which increase top end horsepower and extend the rev range as well as smoothing out the torque curve. Advancing, on the other hand, increases cylinder pressure and gives more bottom end and mid range power, has a more peaky torque curve and falls off earlier in the rev range. Advancing and running 1.7's - as they pertain to the Ecam - brings the exhaust event in sooner (44*bbdc as opposed to 40*bbdc) and increases the ramp rate of the exhaust valve which is beneficial on GT40 heads (most sbf heads included) as they suffer poor exhaust flow charicteristics. As always, check PTV clearance.
 
Posted by wilit (Member # 3367) on :
 
quote:
Originally posted by Notch_notch:
what the different 0* to 4* 4degrees retarded....
Degreeing the cam changes the power band of the motor, either moving it up or down the RPM range. What copcar said is a pretty good explaination.
 




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