Cylinder head advice
#1
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Cylinder head advice
Got a bit of a dilemma; I've got three sets of heads I could use
1. Gas flowed STi2's
2. STi5/6 in bits and need a valve
3. Sti 7's (JDM) all together and ready to go
Which ones should I use on my 2.5 Axis stage 3?
Mark A
1. Gas flowed STi2's
2. STi5/6 in bits and need a valve
3. Sti 7's (JDM) all together and ready to go
Which ones should I use on my 2.5 Axis stage 3?
Mark A
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i'm interested in the STI 5/6 cams if their fine
if you're willing to sell them please send me a PM
i would have them tested on a flowbench and pick the highest flowrate.
So probably n#1
if you're willing to sell them please send me a PM
i would have them tested on a flowbench and pick the highest flowrate.
So probably n#1
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I have both phase I and II inlets.
I think what I should do is use the STi7 heads till I've sorted out the STi5/6 heads with vernier wheels and bigger valves.
Can I re-use the Cometic head gasket if the head has been torqued down but the engine has not run?
Mark A
I think what I should do is use the STi7 heads till I've sorted out the STi5/6 heads with vernier wheels and bigger valves.
Can I re-use the Cometic head gasket if the head has been torqued down but the engine has not run?
Mark A
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Mark, right decision use the Vers 5 / 6 ones. Thin steel gaskets.
David APi Engines / APi Impreza
www.apiengines.com
David APi Engines / APi Impreza
www.apiengines.com
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what year is the car? if it's a phase 2 car, then stick with phase 2 heads, as the idle control valve on phase 1 manifold will cause problems for you.
Single Sti valve for v5/6 is about £48 new, although I have a few used ones knocking about that are straight.
V7 heads should be good, although a little bit of a waste without the AVCS being controlled. I might be tempted to go with the v7 heads if you already have them. Appropriate gasket thickness will depend on the piston dish and deck height.
Paul
Single Sti valve for v5/6 is about £48 new, although I have a few used ones knocking about that are straight.
V7 heads should be good, although a little bit of a waste without the AVCS being controlled. I might be tempted to go with the v7 heads if you already have them. Appropriate gasket thickness will depend on the piston dish and deck height.
Paul
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Paul it's a 93/94 wiring loom with a Link ECU, is the best way to describe it. All the mechanical parts have been changed.
Can you tell me how to wire up a 3 wire TPS to a 4 wire loom?
Has anybody ever fitted a phase I inlet to phase II heads, i.e cut and swapped the gasket flange section.
If you fit the STi7 heads to a classic can you control the AVCS with anything.
Mark A
Can you tell me how to wire up a 3 wire TPS to a 4 wire loom?
Has anybody ever fitted a phase I inlet to phase II heads, i.e cut and swapped the gasket flange section.
If you fit the STi7 heads to a classic can you control the AVCS with anything.
Mark A
#13
Originally Posted by Mark A
If you fit the STi7 heads to a classic can you control the AVCS with anything.
Mark A
Mark A
Stick with the Phase II, version 5/6 heads as recommended above.
Conrad
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Conrad,
That's a sensible recommendation, but how do you propose to overcome the different stud pattern on the heads, and the increased distance between ports accross the engine?
I know these problems can be overcome (just as I have), but it's certainly not a trivial job.
Paul
That's a sensible recommendation, but how do you propose to overcome the different stud pattern on the heads, and the increased distance between ports accross the engine?
I know these problems can be overcome (just as I have), but it's certainly not a trivial job.
Paul
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