A&Q about 350Z
Q:
Are there any differences between the mk2 1.8 16v head and the mk3 2.0L 16v head? I found out the other week that the mk2 8v head has the in jectors in the head where as a m3 8v has them in the manifold which I hadn't realised. Are there any major differences like this with the valvers?
A:
Are there any differences between the mk2 1.8 16v head and the mk3 2.0L 16v head? I found out the other week that the mk2 8v head has the in jectors in the head where as a m3 8v has them in the manifold which I hadn't realised. Are there any major differences like this with the valvers?
Mk 3 ADY, 2E and (AGG anyone?) heads are similar to 3A/ABK Audi heads which have rasied intake port roofs for the injectors that are in the inlet manifold. Early PB/PF/PG and CIS DX/EV heads where different. The external stuff that bolts to 16v heads may be different between early and later head castings for CIS and EFI. For the real differences between complete or bare 16v heads you can go
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A:
mk2 and mk3 16v heads are different. Mainly to do with the way the air and fuel is taken into the engine I think.
A:
Cheers guys. Reason for asking is that my mate is starting to gather bits for a 2.0L 16v which he is planning to run throttle bodies on from the word go. 2.0L 8v engines are mega easy to get hold of cheaply so I'd recommended he start there and then use a mk2 head with a set of Jenvey DTH throttle bodies. Unfortunately being an 8v man I'm not very clued up on the in's and outs of 16v's.
Any pearls of wisdom?
Cheers,
Sam
A:
mk2 or mk3?
A:
2.0L 16V is the route I want to go down so greatful for the advice too.
A:
Cheers guys. Reason for asking is that my mate is starting to gather bits for a 2.0L 16v which he is planning to run throttle bodies on from the word go. 2.0L 8v engines are mega easy to get hold of cheaply so I'd recommended he start there and then use a mk2 head with a set of Jenvey DTH throttle bodies. Unfortunately being an 8v man I'm not very clued up on the in's and outs of 16v's.
Any pearls of wisdom?
Cheers,
Sam
If you put a MK2 16v head on a 8v block with 8V pistons your compression will be too low (8:1) for a highoutput N/A on ITBs and will make it run like a dog.
The only way around this will be to get 16v pistons which have no sink in them and have pockets for the intake valves for the proper 10.5:1 compression. As your cost will start to escalate it would be better to have just found a good 2.0 16v motor and start from there.