K Series VVC Tuning
K Series VVC Tuning
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Discussion

Waitey

Original Poster:

1,121 posts

242 months

Wednesday 21st June 2017
quotequote all
Hi All,

I've gotten a bit too used to my K series performance now and I'm looking for the next steps to take.

Current spec is, 1.8 VVC 143bhp base engine, MEMS2 ecu, 52mm throttle body, poorly designed 4-2-1 manifold and a direct cold air feed.

Who is out there these days to do or advise on tuning work, I emailed Dave of DVA power but had no reply?

Do I:

A) Swap the exhast cam for a Piper 270H, get a new exhaust manifold made and just enjoy it? Cost circa £1000
B) Go all out, Jenvey's, Piper 285's, delete the VVC, new manifold and Emeral ECU? Cost circa £2500
C) Be different, Honda K20a engine, loom, K pro Ecu, Mcgregor bell housing, clutch, mounts and manifold? £3500

analog_me

287 posts

149 months

Wednesday 21st June 2017
quotequote all
Call Roger of sabreheads.
He is the one who designed the higher k series derivatives and a top chap.

unclefester

84 posts

228 months

Wednesday 21st June 2017
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Rog built the original VHPD heads for the S1 Exiges when contracted to Janspeed.

I discovered he'd built the head for an endurance race engine I have which needed new guides so he replaced them with extra length Colsibro units and the engine is running very strongly..212bhp and over 200 Nm with more to come now I've fitted the right pump.

Good guy and always happy to tank and advise on the phone.

fergus

6,430 posts

295 months

Wednesday 21st June 2017
quotequote all
Get someone to relieve the cam follower buckets and fit some proper high lift cams (e.g. 1227/1444s), after deleting the VVC gubbins. A decent ECU will be able to be mapped such that historic issues with high lift & duration cams with a lot of overlap can be minimised.

The two Dave's are your men here (Andrews and Walker respectively) for both advice and work. thumbup

analog_me

287 posts

149 months

Friday 23rd June 2017
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fergus said:
Get someone to relieve the cam follower buckets and fit some proper high lift cams (e.g. 1227/1444s), after deleting the VVC gubbins. A decent ECU will be able to be mapped such that historic issues with high lift & duration cams with a lot of overlap can be minimised.

The two Dave's are your men here (Andrews and Walker respectively) for both advice and work. thumbup
You can only get as far as 180 with the plenum and that would be after head work.

Jack_and_MLE

626 posts

259 months

Tuesday 27th June 2017
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Keep the VVC, head porting, fit throttle bodies and ECU (Emeral) and et Voila.

It's what I have and running about 180bhp.

Be carefull of your pistons

Jack

analog_me

287 posts

149 months

Tuesday 27th June 2017
quotequote all
Above suggestion could be a very good option.
Just aim for long 150mm (if possible) trumpets....
That will give you huge amounts of torques..