P5 NA Build - Target 175whp
- Thread starter jimmysuite
- Start date
- :
- 03' Mazda Protege 5
Gongrats! That is going to be one rad engine!
jimmysuite
Member
- :
- 2003 Mazda Protege5
P&P awesomeness!
Got the head back from Protege Garage today! It looks awesome. the oversized valves fit perfect and the springs and retainers seem as though they fit great. What are you still doing reading my post look at the pics!!!
Go back and check the fist page if you want to compare.
pic1 - 1mm oversized valves from crossover
pic2 - intake 3 angle valve job
pic3 - exhaust 3 angle valve job
pic4 - exhaust P&P - smooth as a baby's butt
pic5 - Intake P&P - no more ugly casting marks
More pics of the head here http://www.mazdas247.com/forum/showthread.php?t=123697737
Got the head back from Protege Garage today! It looks awesome. the oversized valves fit perfect and the springs and retainers seem as though they fit great. What are you still doing reading my post look at the pics!!!
Go back and check the fist page if you want to compare.
pic1 - 1mm oversized valves from crossover
pic2 - intake 3 angle valve job
pic3 - exhaust 3 angle valve job
pic4 - exhaust P&P - smooth as a baby's butt
pic5 - Intake P&P - no more ugly casting marks
More pics of the head here http://www.mazdas247.com/forum/showthread.php?t=123697737
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jimmysuite
Member
- :
- 2003 Mazda Protege5
- :
- 03.5 YLW MSP
nice man!
nice head work - did you happen to get numbers off the flow bench? would be useful if you did (before and after), because it will give others an indication of just what X cfm @ Y lift means from an NA power point of view.
Hurry up and install it
also, with agressive aftermarket valve springs, what sort of redline are you looking to push? the twiggy cams should, as they stand, comfortably support an 8000rpm rev limit, more with dialing them in properly - but you'll get some crazy piston speeds at that sort of rev limit (as you can see in my spreadsheet posted somewhere in the race thread)......
Hurry up and install it
also, with agressive aftermarket valve springs, what sort of redline are you looking to push? the twiggy cams should, as they stand, comfortably support an 8000rpm rev limit, more with dialing them in properly - but you'll get some crazy piston speeds at that sort of rev limit (as you can see in my spreadsheet posted somewhere in the race thread)......
jimmysuite
Member
- :
- 2003 Mazda Protege5
Quote from JDM Sam reffering to the aftermarket springs available through Ken at PG from crossover and supertech
"There are also 2 versions. single spring and dual spring.
This is the difference in the springs.
Factory springs have about 45 lbs of seat pressure (at closed valve)
Single: 58 lbs (+28%)
Dual : 85 lbs (+ 88%)
So depending on your build goals there are 2 choices to go with.
The dual is recommended for people who plan on getting aggressive cams, big boost, increased rpm.
The single is recommend for a more conservative build."
I went with the single for a little more peace of mind concerning valve float. I hope to run red lines of 7000-7250. Not too much more since i still have stock rods.
I dont know if and flow bench numbers were taken, I will ask.
"There are also 2 versions. single spring and dual spring.
This is the difference in the springs.
Factory springs have about 45 lbs of seat pressure (at closed valve)
Single: 58 lbs (+28%)
Dual : 85 lbs (+ 88%)
So depending on your build goals there are 2 choices to go with.
The dual is recommended for people who plan on getting aggressive cams, big boost, increased rpm.
The single is recommend for a more conservative build."
I went with the single for a little more peace of mind concerning valve float. I hope to run red lines of 7000-7250. Not too much more since i still have stock rods.
I dont know if and flow bench numbers were taken, I will ask.
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jimmysuite
Member
- :
- 2003 Mazda Protege5
No flow bench #'s, sorry LW.
jimmysuite
Member
- :
- 2003 Mazda Protege5
Would heat or cryo treating our stock rods improve strength by a significant margin or would it be like gold plating a pile of sh*t?
Probably the wrong kind of strength... cryo and heat treating usually makes things hard and brittle...
I thought I read somewhere the stock rods weren't the strongest things in the world and were a recommended replacement for even a modest build, Boosted or N/A.
That being said, you have yourself one sexy build going there mate! Would it be possible to get a run down on a single post of the build parts or do you not want copycats
That being said, you have yourself one sexy build going there mate! Would it be possible to get a run down on a single post of the build parts or do you not want copycats
jimmysuite
Member
- :
- 2003 Mazda Protege5
Does the FSZE use the same rods as the FSDE?
If it does im not to worried about the rods for my build.... if it doesnt then im starting to lean toward forged rods for an extra margin of saftey/reliability. Plus if i go with forged rods then i might as well make them a little longer and go with forged pistons, which i can get at a CR of 10.7:1.
IF I did that I would be in the running for the all out title of 100hp/L
On the other hand many people on this forum run higher than stock boost with stock rods on their msp's.... i dont think slightly increased compression will add near the same kind of stress.
we will see. I'm kinda getting to the point where I just want my car back so I can enjoy it.
If it does im not to worried about the rods for my build.... if it doesnt then im starting to lean toward forged rods for an extra margin of saftey/reliability. Plus if i go with forged rods then i might as well make them a little longer and go with forged pistons, which i can get at a CR of 10.7:1.
IF I did that I would be in the running for the all out title of 100hp/L
On the other hand many people on this forum run higher than stock boost with stock rods on their msp's.... i dont think slightly increased compression will add near the same kind of stress.
we will see. I'm kinda getting to the point where I just want my car back so I can enjoy it.
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jimmysuite
Member
- :
- 2003 Mazda Protege5
i answered my own question.....
http://www.mazdas247.com/forum/showthread.php?t=84124
Lots of good info here....
FSZE has exact same internals and redline of 7000-7200
Microtech has a hard and soft fuel cut no?
I could probably get away with a soft cut at 7000 and a hard cut at 7200.
Let me know what you guys think.... remember i want the power but im not going to be driving my car to redline every time i accelerate.
http://www.mazdas247.com/forum/showthread.php?t=84124
Lots of good info here....
FSZE has exact same internals and redline of 7000-7200
Microtech has a hard and soft fuel cut no?
I could probably get away with a soft cut at 7000 and a hard cut at 7200.
Let me know what you guys think.... remember i want the power but im not going to be driving my car to redline every time i accelerate.
hard and soft cut yes.... you have a "rev limit" (soft cut) and "rev cut" (hard cut).
i run mine on stock internals with a 7000rpm soft and 7250 hard (i find 7200 is a little bit easy to hit out of first)
engine doesn't mind being run to redline all the time, i do it at every set of traffic lights
jimmysuite
Member
- :
- 2003 Mazda Protege5
pistons are in and head is back on. The cams have been installed once for shim measurements and shims should get ordered today.
I'm excited and nervous all at the same time....
I'm excited and nervous all at the same time....
- :
- 02' Protege ES (Gone)
16' Mazda 6 sport manual
Dis gonna be nice
jimmysuite
Member
- :
- 2003 Mazda Protege5
The due date is roughly two weeks from today. I tried to get them to induce but they think its too dangerous....
hehe...
you're going to have some fun - for the first few hundred miles.... trying to restrain yourself from kicking it fair in the guts
