jdmcg3
Well-Known Member
Re: JDMCG3's N/A H22 Build (Last Update: 01/23/2012)
well im going to pick up my h23a "blue top" intake manifold (has larger runners) later today.. but there was some uncertainty if it would bolt up with out mods. well did some searching and found some useful info..
All H23AVtec Blue Tops came out of either SIR Station Wagon CH9 chassis code 2WD and 4WD model was CL2. Both were Auotmatics. 2WD got the same Prelude 97-01 Triptronic Auto transmission
H23AVtec Blue Top Head Facts:
1998 and 1999 head castings are P13 (H22)
1998 and 1999 Intake Manifolds will read PGMFI on the plenum
IACV will be on front of plenum like a P13 (H22)
2000 and 2001 head castings are PDE (H22 Euro R/Type S)
PDE heads have different valve angle then P13 different PDE valve angine was to be better for performance
PDE head has a factory port job like the ITR and CTR heads
2000 and 2001 Intake Manifolds will have no PGMFI on the pleunum and will be smooth
2000 and 2001 will have IACV on back of plenum
The biggest question was cams, When I spec'd mine out they did not seem to be as agressive as the Type S/Euro R/F20B MT cams. PDE head.
The Fact is after comparing part #'s the Cams in 2WD and 4WD P13/PDE models are the same that are in the SIR OBD2 JDM H22 5 spd/Auto. As we all know and part #'s show over seas Auto and 5 spd JDM H22 cams are the same no difference.
Valves: Are the same as the JDM OBD2 H22 (P13)
Valve Springs: Are the same as the JDM OBD2 H22 (P13)
Retainers: Same as the Euro R/F20B Auto and MT
All H23A Vtec Blue Tops cam with a larger Throttle Body then a normal JDM H22 OBD1/2. My measurements showed it was 65mm on inside (meets intake) and outisde was 68mm
Throttle Body is same casting as ITR and S2000 which those gaskets will work on it.
Bottom End:
Open Deck, 55mm mains, H22 Auto tensioner, 95mm stroke 10.6-1 compression, No squirters.
Alternator Only crank pulley, same part as Euro R/F20B since both are electric PS not belt.
H22A4 98-01 Prelude Oil Pump, Water Pump, Timing Belt, Balancer Belt, Head Gasket, Intake Manifold Gasket and Exhaust Manifold Gasket.
H22A4 98-01 Main Bearings/Thrust
H23A1/F22 Rod Bearings
All H22A4 head parts are swappable to the Blue Top H23.
Swap driver side engine bracket for 92+ Prelude H and bolts in like H
I am still looking into it but I believe the Blue Top H23 has a larger oil pan then a typical H22 92-96. Which sucks far as replacement.
Other neat info: F20B Blue Top MT shares same Valve Springs/Retainers/Cams as the Euro R
F20B Blue Top Auto version shares same Valve Springs/Retainers/Cams as the JDM H22 OBD2 SIR and H23A Vtec Blue Top
__________________
well im going to pick up my h23a "blue top" intake manifold (has larger runners) later today.. but there was some uncertainty if it would bolt up with out mods. well did some searching and found some useful info..
All H23AVtec Blue Tops came out of either SIR Station Wagon CH9 chassis code 2WD and 4WD model was CL2. Both were Auotmatics. 2WD got the same Prelude 97-01 Triptronic Auto transmission
H23AVtec Blue Top Head Facts:
1998 and 1999 head castings are P13 (H22)
1998 and 1999 Intake Manifolds will read PGMFI on the plenum
IACV will be on front of plenum like a P13 (H22)
2000 and 2001 head castings are PDE (H22 Euro R/Type S)
PDE heads have different valve angle then P13 different PDE valve angine was to be better for performance
PDE head has a factory port job like the ITR and CTR heads
2000 and 2001 Intake Manifolds will have no PGMFI on the pleunum and will be smooth
2000 and 2001 will have IACV on back of plenum
The biggest question was cams, When I spec'd mine out they did not seem to be as agressive as the Type S/Euro R/F20B MT cams. PDE head.
The Fact is after comparing part #'s the Cams in 2WD and 4WD P13/PDE models are the same that are in the SIR OBD2 JDM H22 5 spd/Auto. As we all know and part #'s show over seas Auto and 5 spd JDM H22 cams are the same no difference.
Valves: Are the same as the JDM OBD2 H22 (P13)
Valve Springs: Are the same as the JDM OBD2 H22 (P13)
Retainers: Same as the Euro R/F20B Auto and MT
All H23A Vtec Blue Tops cam with a larger Throttle Body then a normal JDM H22 OBD1/2. My measurements showed it was 65mm on inside (meets intake) and outisde was 68mm
Throttle Body is same casting as ITR and S2000 which those gaskets will work on it.
Bottom End:
Open Deck, 55mm mains, H22 Auto tensioner, 95mm stroke 10.6-1 compression, No squirters.
Alternator Only crank pulley, same part as Euro R/F20B since both are electric PS not belt.
H22A4 98-01 Prelude Oil Pump, Water Pump, Timing Belt, Balancer Belt, Head Gasket, Intake Manifold Gasket and Exhaust Manifold Gasket.
H22A4 98-01 Main Bearings/Thrust
H23A1/F22 Rod Bearings
All H22A4 head parts are swappable to the Blue Top H23.
Swap driver side engine bracket for 92+ Prelude H and bolts in like H
I am still looking into it but I believe the Blue Top H23 has a larger oil pan then a typical H22 92-96. Which sucks far as replacement.
Other neat info: F20B Blue Top MT shares same Valve Springs/Retainers/Cams as the Euro R
F20B Blue Top Auto version shares same Valve Springs/Retainers/Cams as the JDM H22 OBD2 SIR and H23A Vtec Blue Top
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