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Thread: Kelford 184-C on the Dyno - Progress so Far.

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Posts: 71-80 of 103
2010-02-05 02:47:46
#71
Originally Posted by sssautomotive
Must agree this is a great thread, I have a P11 SR20VE with the Kelford 184-C cams as well and found the exact result with timing adjustment. We tried 8 settings of + and - on both cams with zero change as Clint did and were baffled by what the restriction was. My power was peak of 179Hp at the rollers but held peak power from around 6500 thru to 9000 without any drop off, great power band but not a normal type. Anyway we will continue with changes and testing as I need around 200Hp at the tyres for the class of racing i'm in.

By the way a side note on the 184-C they aren't a drop in as the lift is too high for standard springs (12.5mm) so if a straight drop inno shims are what someone is after mybe stick with the N1 cams.

Geoff


Thats your head or throttles keeping you back right there.

The Ve head is sensative to portwork - who did the portwork on it?
2010-02-05 19:10:23
#72
Is it possible for a 2.25" collector to cause a built ve's power to peak too early?
2010-02-05 19:27:20
#73
I highly think not.. my set up right now uses a 2.25 collector and I'm making my peak power @ 8.5k. W the stock intake mani it made peak at just before 8k. This was both with N1 cams
2010-02-05 20:47:53
#74
I'm just saying though that the collector itself is not holding it back... the headers design could be holding it back however...
2010-02-06 08:19:19
#75
I'm just saying though that the collector itself is not holding it back... the headers design could be holding it back however...


I tested the engine with complete exhaust system on the car then removed exaust from the collector back and zero change to power, removed collector (so 4 had 2 inch pipes open) and lost 25Hp across complete graph,so concluded collector works with helping extract exhaust but I guess that doesn't say its no restrictive on how much it helps. Maybe I'll try 2 1/2" and see what that does.
The ports and valves on the head are untouched so I know there are gains there just need to work out if it's inlet or exhaust that needs the work.
Any help would be appreciated .....
2010-02-06 10:05:58
#76
Originally Posted by sssautomotive
I tested the engine with complete exhaust system on the car then removed exaust from the collector back and zero change to power, removed collector (so 4 had 2 inch pipes open) and lost 25Hp across complete graph,so concluded collector works with helping extract exhaust but I guess that doesn't say its no restrictive on how much it helps. Maybe I'll try 2 1/2" and see what that does.
The ports and valves on the head are untouched so I know there are gains there just need to work out if it's inlet or exhaust that needs the work.
Any help would be appreciated .....


I have a custom set of extractors made based on the 20V design. Dunno if your car is FWD but if so, I am willing to let you put it into your car and test it.
Gerry
2010-02-06 15:07:03
#77
Sending a few goodies to sss automotive
2010-02-07 01:33:29
#78
20V
Originally Posted by kiwi-japie
I have a custom set of extractors made based on the 20V design. Dunno if your car is FWD but if so, I am willing to let you put it into your car and test it.
Gerry


Here are some pics of the extractors



2010-02-08 22:02:50
#79
Hi Uncle Gerrie

What's so special about those headers? Could you give me some specs on them?
2010-02-09 12:26:54
#80
Nothing special about them. Did this after talking to Andreas. Quite a few people swear by the 20V extractors. I dont have any of the specs any more as I haven't had them in my possession for the last 7 months.
That is why I wanted someone to fit them and test it. Hopefully it will happen sometime.
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