3sge 3rd gen inquiries Options

[millow]

Helo guys im new to this site, im from the philippines and just got a 3sge 3rd gen for my st 171, was planing of upgrading the engine while its still out of the car, was thingking of puting itbs from a black top 4age and changing the values and springs from a beams which are allitle bit bigger or from a gte im still sourcing for the specs of other ge or gte and if they can be swap with minor machining, then go adjustable cam gears and cams with better lift, its kinda hard and expensive to look for 3sge parts here so im looking at the options from other gen that can be an upgrade for the 3rd gen, any sudgestions will be most appriciated. Thanks

[pasqual]

I did upgrade of 3 rev3 engines

-cams 278deg 11.2mm lift (custom profile ,re-griding)
- CR 11.8 (head work incl. valves seat griding)
-SA ecu (megasquirt2 ) rev 8100 rpm

as option:

- custom calculated intake manifold with TB 75mm
- custom ITB 4x45mm (calculated for new cams setting)
- hks exhaust header (2nd hand )


set:
-full prepared head with cams (CR11.8 , new cams incl.valve lash etc)
1000USD
- wiring for megasquirt2 + fuel/ignition maps (all setting) 300USD



This post has been edited by pasqual: Mar 9, 2010 - 12:10 AM

[millow]

thanks for the reply sir pasqual, is it safe to do regrinds, what valves did you use, did you have isuses with megaquirt2, how many hp did it get on the dyno

This post has been edited by millow: Mar 9, 2010 - 12:46 AM

[pasqual]

-re-griding is safe , I did it on my beams too already 10000km on this set
-stock rev3 valves ,
-compression test showing 232PSI
-megaquirt2 - no problems at all
-Trq from 4500rpm up more than 200Nm only on cams and head-work (with stock intake and exhaust) 200hp+
-will put fresh dyno results soon with hks exhaust-header and ITB

Project is ongoing ,3 engines are already running on different specification:
1. upgraded head and cams (stock exhaust + intake ) only piggyback for fuel correction and stock ecu (at 7500rpm 197hp, 208Nm@5000rpm )
2. upgraded head and cams + megaquirt2 + custom intake (will make fresh dyno this weekend )
3. upgraded head and cams + megaquirt2 + hks exhaust header + custom ITB 4x45mm (ITB in progress after that will make dyno )

This post has been edited by pasqual: Mar 9, 2010 - 1:06 AM

[Rusty]

wow thats some nice compression numbers there.
I await those dyno sheets

[millow]

hello guys i dont know if this is a dum question, can i use the valves and springs of a 3sge 4th gen beams red top for 3sge 3rd gen, intake value is 1mm and ex is .5mm bigger, for springs which gen has stronger springs, was also thingking if it is possible to use the cams of the 3sge 4th gen beams redtop for 3sge 3rd gen would take out the vvti, can this work

[Rusty]

dont think so on the cams since the gen 3 has the dizzy and 4th has CAS.
for valves and springs imo its better off going aftermarket, since they are stronger and allow more lift without become coilbound (gen 3 is limited to 10.5mm lift, 4th idk)

[pasqual]

stock rev3 springs are good for 11.3mm lift ,

[Rusty]

they are? I read that they become coilbound at 10.5mm of lift

[pasqual]

manual saying that Intake cam lift is 9.8mm correct ?

true is 10.115mm ..... (profile measured deg by deg to 0.001mm)

So You can read about ..... I prefer to check it

[millow]

thanks guys, so stock springs are ok, just dont beyond 11.3 lift, i will try to find a good machine shop that can do the regrinds, thingking just 272deg with 10.5mm lift, how about cam gears, is it useless to use bigger values

i looking if i can mill the TB will not go itbs for now, what is a good piggyback system that a can use?

my 3sge cam from a JDM automatic, is it true that the intake cam of an 3sge 3rd gen auto is 240deg 8.7mm lift than the manual 252deg with a 9.8 or like what you said 10.115mm, havent opened it yet, i got the engine with out tranny

[pasqual]

thanks guys, so stock springs are ok, just dont beyond 11.3 lift, i will try to find a good machine shop that can do the regrinds, thingking just 272deg with 10.5mm lift, how about cam gears, is it useless to use bigger values

i looking if i can mill the TB will not go itbs for now, what is a good piggyback system that a can use?

my 3sge cam from a JDM automatic, is it true that the intake cam of an 3sge 3rd gen auto is 240deg 8.7mm lift than the manual 252deg with a 9.8 or like what you said 10.115mm, havent opened it yet, i got the engine with out tranny

about regrinds

- new-cam-profile must be prepared by professional engine engineer , designed and calculated for specific engine
(my friend who did it for me have 30 years experiences in preparing racing engines ,
he designed cams and head for soda FABIA S2000 , 2L NA ,results 295hp 260Nm )

- even some one will prepare cam-profile Im sure You will not get 272deg from 240 automatic stock cams
- find good machine shop for this task ... hmm try it .... will be very expensive

GOOD LUCK .. ( I did it .... )

BUT

I can sell You only cams 500USD set ,

IN 278deg 11.2mm , EX 276 10.5mm + shims

-but shims must be grid to correct valve-lash for new cams on your-head
-I recommend lower-head for change CR from 10.5 to 11.8

For 1000USD You can get , set including head work done (CR , valves-lash , valves-set )
You need only put it on block ...

[millow]

thanks for the offer sir pasqual, i will seriuously consider that but i will have to save first, and like i said i am from the philippines there will be shipping costs, we have decent machine shops here that can do the head, how much did you shave off it, and what gasket did you use

as for now i will just prep the engine, will post pics

[Rusty]

^ try kelford cams here in NZ, they can do you custom cams (they are very good)

[pasqual]

^ try kelford cams here in NZ, they can do you custom cams (they are very good)

looks like very good idea

http://www.camshaftshop.com/home?page=shop...category_id=100

3-195-A Camshaft

640USD

[millow]

looks like very good idea

http://www.camshaftshop.com/home?page=shop...category_id=100

3-195-A Camshaft

640USD

how you think these cams would do

what happened to your dyno

This post has been edited by millow: Mar 19, 2010 - 4:27 AM

[Rusty]

I dont know, thats some major duration, its very high imo (though I guess it depends what else you've done to the motor)


oh no wait these are lol
http://www.camshaftshop.co.nz/index.php/19...p_view.tpl.html
307/300 Duration, 12.25mm/10.65mm Lift