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Toymods » Tech & Conversions » 2TG verses 4AGE Facts ! (5) 0 Vote(s)

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thetoyman75
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Re: 2TG verses 4AGE Facts ! Fri, 31 May 2002 06:10 Go to previous messageGo to previous message
Jamie,

Bill is a walking encyclopedia of 4AGE info so I would have to say I am probably up against more than more match. I'm not Bad on the old 2TG but I am no Guru. And yes I would love to see the 4AGTE v's 3TGTE debate but how about we see what the Dyno day brings. I won't be ready in time but hopefully there will be others to aid the discussion.


Bill,

Shim over verses Shim under is no contest, Shim Under is miles ahead and I'm sure you won't dispute that at all.

As for Pushrod verses Shim over its a little off topic but No Shim Over setup can handle cams and RPM like a good set of Pushrods. Since you ventured towards formula atlantic I'll bring up two points. Formulla Atlantic run a Shim Over set up !! The shim under can't cut it. However a Full drag spec 2T Turbo can happily turn out over 600Hp on Pushrods. !! Do I ned to continue. And lets keep to the comparison at hand.

Lets face it Shim under really does suck ! Anything like big lift cams and the shims get dislodged and thats a bad thing in anyones language. What is classed as a high performance upgrade for the 4AGE is stock on a 2TG !

As for the Cosworth comparison your point is ???
The 2TG was only Toyota's second Twin cam Venture (the 3M in the 2000 GT being there first) The race versions of the 2TG actually ended up with 16 valves and are the true predessesors to the 4AGE but yes there was clearly an influence from the cosworth design.

2 Valves Verses 4... Id be kidding myself to say 2 valves is really superior from a technical veiwpoint however take a good long look at the figures produced from both engines. A formula Atlantic cranks out 240HP A good race/rally 2TG cranks out 200HP but with greater torque ! I know what i would rather be driving. The torque of course comes from its ability to acheive a Higher capacity thru stroking and boreing. A 1900+ CC 2TG is not uncommon. A 200HP 2TG is also not the N/A limit but I will refrain from statements I cannot yet support.

RPM Limits - Bill you say a "Stock" 4AGE bottom end will handle 9000rpm. Was that with truely stock rods or were they shot peened and linished ?

A set of Stock 2TGEU rods will support in excess of 500HP and have no problems with 9000rpm once they are properly shotpeened and linished. Whilst Carillo rods are common place in a Race 4AGE they are rarely required in a T series build ! And before anyone else brings it up... Its RPM that kills Rods not HP so the larger HP figure from a Race 4AGE is not applicable to that component.

Bill In saying I didn't want a mines better than yours discussion I was stressing I want a valuable technical discussion Statements on personal preference are not what I want. There is that much misinformation about both engines that it would be nice to see a true technical comparison. Statements like your initial post do noone any favours least of all the lesser informed. In full race spec I have no doubt the 4AGE produces a higher output but fact is few of us hear want a full race engine we want street level performance. Besdies which I would bet that a Race 4AGE far outweights the cost of a Race 2TG. there shear fact of it having double the head parts and its needing a shim under setup would Guarantee that !

Thanks,

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SubjectPosterDate
Read Message   2TG verses 4AGE Facts ! thetoyman75Thu, 30 May 2002 07:25
Read Message   Re: 2TG verses 4AGE Facts ! thetoyman75Thu, 30 May 2002 07:29
Read Message   Re: 2TG verses 4AGE Facts ! Malkomv2.0Thu, 30 May 2002 07:33
Read Message   Re: 2TG verses 4AGE Facts ! Karl_skewesThu, 30 May 2002 07:59
Read Message   Re: 2TG verses 4AGE Facts ! HooNThu, 30 May 2002 08:09
Read Message   Re: 2TG verses 4AGE Facts ! YOGI8UThu, 30 May 2002 08:17
Read Message   Re: 2TG verses 4AGE Facts ! dorikinThu, 30 May 2002 08:28
Read Message   Re: 2TG verses 4AGE Facts ! PumpkinThu, 30 May 2002 08:31
Read Message   Re: 2TG verses 4AGE Facts ! dorikinThu, 30 May 2002 08:40
Read Message   Re: 2TG verses 4AGE Facts ! PumpkinThu, 30 May 2002 08:43
Read Message   Re: 2TG verses 4AGE Facts ! YOGI8UThu, 30 May 2002 08:56
Read Message   Re: 2TG verses 4AGE Facts ! JohnnyThu, 30 May 2002 11:15
Read Message   Re: 2TG verses 4AGE Facts ! thetoyman75Thu, 30 May 2002 15:10
Read Message   Re: 2TG verses 4AGE Facts ! Karl_skewesThu, 30 May 2002 20:14
Read Message   Re: 2TG verses 4AGE Facts ! thetoyman75Thu, 30 May 2002 21:52
Read Message   Re: 2TG verses 4AGE Facts ! Bill SherwoodFri, 31 May 2002 00:56
Read Message   Re: 2TG verses 4AGE Facts ! thetoyman75Fri, 31 May 2002 03:54
Read Message   Re: 2TG verses 4AGE Facts ! MRTA22Fri, 31 May 2002 04:25
Read Message   Re: 2TG verses 4AGE Facts ! Bill SherwoodFri, 31 May 2002 04:39
Read Message   Re: 2TG verses 4AGE Facts !  thetoyman75Fri, 31 May 2002 06:10
Read Message   Re: 2TG verses 4AGE Facts ! SeadogFri, 31 May 2002 06:18
Read Message   Re: 2TG verses 4AGE Facts ! CorvidFri, 31 May 2002 08:29
Read Message   Re: 2TG verses 4AGE Facts ! CorvidFri, 31 May 2002 08:34
Read Message   Re: 2TG verses 4AGE Facts ! celicamad85Fri, 31 May 2002 11:00
Read Message   Re: 2TG verses 4AGE Facts ! JohnnyFri, 31 May 2002 11:04
Read Message   Re: 2TG verses 4AGE Facts ! JohnnyFri, 31 May 2002 11:11
Read Message   Re: 2TG verses 4AGE Facts ! TeenzFri, 31 May 2002 22:39
Read Message   Re: 2TG verses 4AGE Facts ! thetoyman75Fri, 31 May 2002 23:10
Read Message   Re: 2TG verses 4AGE Facts ! Classique71Sat, 01 June 2002 02:23
Read Message   Re: 2TG verses 4AGE Facts ! chrisssSat, 01 June 2002 07:47
Read Message   Re: 2TG verses 4AGE Facts ! dorikinSat, 01 June 2002 08:06
Read Message   Re: 2TG verses 4AGE Facts ! Bill SherwoodSat, 01 June 2002 09:10
Read Message   Re: 2TG verses 4AGE Facts ! Jonny2TGSat, 01 June 2002 09:58
Read Message   Re: 2TG verses 4AGE Facts ! thetoyman75Sat, 01 June 2002 11:28
Read Message   Re: 2TG verses 4AGE Facts ! JohnnySat, 01 June 2002 11:56
Read Message   Re: 2TG verses 4AGE Facts ! thetoyman75Sat, 01 June 2002 11:58
Read Message   Re: 2TG verses 4AGE Facts ! SamSat, 01 June 2002 18:53
Read Message   Re: 2TG verses 4AGE Facts ! IRA11YSat, 01 June 2002 21:59
Read Message   Re: 2TG verses 4AGE Facts ! CorvidSun, 02 June 2002 01:28
Read Message   Tina Tweaks ! thetoyman75Sun, 02 June 2002 13:43
Read Message   Re: 2TG verses 4AGE Facts ! SeadogMon, 03 June 2002 11:37
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