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Location:
Melbourne
Registered:
August 2003
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Re: 2TG T18??
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Thu, 20 November 2003 06:03
 
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The following I saved away from another 2TG/2T hybrid post recently;
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Re: NA 3TG/2T Hybrid Mon, 07 July 2003 20:17
Block to use:
Any, 2T or 3T. 2T prior to 2T-GEU will require machining for crank clearance.
For 3T, prepare the 3T block for twincam. Rotate the unused cam bearings to cover the oil holes. (Take them out and put back in at a different position).
Pistons:
Must be 3T. For cheap use 3T-C pistons, avaliable up to 86mm. The exhaust valve relief has to be machined a bit deeper. 3T-GTE pistons would give a low compression, don't use.
- 86mm = 1813cc
- 85mm = 1770cc
For good pistons, get custom forged. They are avaliable for 3T/ 3TG engines. Come ready in 89mm and big valve reliefs. One brand is Wisco I think. Also KB. 89mm = ~2L.
Crank:
Must use a 3T crank! This is the main bit. No one has determined a different between 3T-C and 3T-GTE, they may be the same. 3T has a 78mm stroke, and 8 counter weights. 2T crank has 4 counterweights.
Rods:
Any 2T- 3T rods can be used, same dimensions. Some are stronger/weaker. The only way to be sure is to have 2 sets and compare. Any will work fine.
Head:
2T-G! Early 88220 heads had smaller valves, all the rest have the bigger valves.
[i]Prepare the 3T block for twincam. Rotate the unused cam bearings to cover the oil holes. (Take them out and put back in at a different position).
Flywheel:
Any will fit, but use the lightest you got.
Camshafts:
88222 cams work well, 256 degrees with a lot of lift (~10.5mm?) Later ones had less duration.
Intake:
My choice is stock 40mm Solex sidedrafts on the stock manifold. DCOE bolt pattern will accommodate similar Weber or Dellorto carburettors. 2T-GE manifold will fit for fuel injection.
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Hope this is of some assistance. I remember seeing a cutaway of a 2TG block with an 89mm bore compared with a standard bore block. The 89mm bore left only very marginal clearances to the galleries. My recommendation would be to avoid such excessive block modification.
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| | Subject | Poster | Date |
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2TG T18??
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Connor | Wed, 19 November 2003 00:27 |
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Re: 2TG T18??
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Jason | Wed, 19 November 2003 00:46 |
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Re: 2TG T18??
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Norbie | Wed, 19 November 2003 03:45 |
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Re: 2TG T18??
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TE35 | Thu, 20 November 2003 03:05 |
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Re: 2TG T18??
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SeptemberSquallIndustries | Thu, 20 November 2003 06:03 |
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Re: 2TG T18??
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Henn | Thu, 20 November 2003 11:27 |
