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New cams to x40 2.0t/T4 (1997-1999)


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tcode wrote on Mon, 27 November 2006 00:26

vulvas40t4 wrote on Sun, 26 November 2006 17:16

Great you find cams. Smile My plan is to take the original rods and clutch to limit and thats enough for me. So about 280-300hp. Smile More than 300hp and you need to swap clutch and rods. Sad 18T is fine for about 300-320hp with these cams. Phase 2 maf is enough for 340hp.

You plan sound very good but if you dont want to swap those rods and clutch then you might want to thing about 18t. Wink

Yup, I am aware of stock clutch/rods limits and I don't intend go further than 300HP too. Is 18t easier to adapt on stock mainfold?

All HL series mitsus need same installation. TD04HL-16T,18T,19T. Smile L series is our original TD04L-14T , 12T.

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vulvas40t4 wrote on Mon, 27 November 2006 01:49

tcode wrote on Mon, 27 November 2006 00:26

vulvas40t4 wrote on Sun, 26 November 2006 17:16

Great you find cams. Smile My plan is to take the original rods and clutch to limit and thats enough for me. So about 280-300hp. Smile More than 300hp and you need to swap clutch and rods. Sad 18T is fine for about 300-320hp with these cams. Phase 2 maf is enough for 340hp.

You plan sound very good but if you dont want to swap those rods and clutch then you might want to thing about 18t. Wink

Yup, I am aware of stock clutch/rods limits and I don't intend go further than 300HP too. Is 18t easier to adapt on stock mainfold?

All HL series mitsus need same installation. TD04HL-16T,18T,19T. Smile L series is our original TD04L-14T , 12T.

Ok, put it another way, why should I look for 18t instead 19t?

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vulvas40t4 wrote on Mon, 27 November 2006 05:58

tcode wrote on Mon, 27 November 2006 12:00

Ok, put it another way, why should I look for 18t instead 19t?

16T 7# 280hp

18T 7# 310hp

19T 7# 330hp

19T has little bit longer spool up time and if your goal is 300hp then 18T is the turbo for that. Wink

So why over size the turbo. Wink

So I went today to pick up cams and I couldn't resist Twisted Evil to buy this too

http://s40concepts.net/forum/index.php?t=getfile&id=11430

for a 180¤ Very Happy, #7 exh. housing .

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sacsha1 wrote on Mon, 27 November 2006 19:11

did you buy adapter plate, you need to change that on ur manifold and cut your flange on ur downpipe and rotate it like 15 degree and ur good to go

I don't have adapter plate at this moment.If I can't buy it for reasonable money I'll make one. DP isn't realy big problem since my exhaust shop already made custom 3" DP for me, some time before and will do it again for cheap.

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GerBeGurGya wrote on Wed, 29 November 2006 01:36

You might don't wanna adjust the cams as it looks like it opens 1mm more deep already compare to the original one.You don't have too much clearance to play with between the piston and the valves and better to be safe than sorry.

Thats 100% true. But my friend has tested that with "max adjustments + or - 7.5degrees the valve still doesnt hit the piston but better safe than sorry. Smile

Theres no information how big the gap is when adjustments are 0 and when their on max.

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GerBeGurGya wrote on Tue, 28 November 2006 18:36

You might don't wanna adjust the cams as it looks like it opens 1mm more deep already compare to the original one.You don't have too much clearance to play with between the piston and the valves and better to be safe than sorry.

Well, in my case it doesn't realy matter since pistons in my engine are already moded for minimum clearence Laughing

http://s40concepts.net/forum/index.php?t=getfile&id=11449

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tcode wrote on Wed, 29 November 2006 06:28

GerBeGurGya wrote on Tue, 28 November 2006 18:36

You might don't wanna adjust the cams as it looks like it opens 1mm more deep already compare to the original one.You don't have too much clearance to play with between the piston and the valves and better to be safe than sorry.

Well, in my case it doesn't realy matter since pistons in my engine are already moded for minimum clearence Laughing

http://s40concepts.net/forum/index.php?t=getfile&id=11449

Those marks are from your valves right?.Don't forget that on high RPM-s if the exhaust can not flow really well the back pressure might gonna work against the valves making the valves closing up late or not letting it close at all.At this point the valves are controlled by the gases only.To prevent a catastrophic event like that the use of stronger spring are definitely a must to maintain proper closing.On the OEM clearance this has been calculated and with a change of the cams which pushes the valves deeper the clearance could be close to the safe limit.Stronger springs are the answer in this case.

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GerBeGurGya wrote on Thu, 30 November 2006 04:23

On the OEM clearance this has been calculated and with a change of the cams which pushes the valves deeper the clearance could be close to the safe limit.Stronger springs are the answer in this case.

These cams are not that "aggressive". Wink

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