I think it look’s better the wrong way around, as it’s now on a rear mounted not front mounted.
I think it look’s better the wrong way around, as it’s now on a rear mounted not front mounted.
The Lancia Thesis plenum I got is the same as the cf3 Alfa plenum, bolts straight on with no modification required. As you can see in the linked thread I’ve put it on a cf2 engine with just a bit of swapping the fittings at the throttle body end. The fitting I blanked now runs the vacuum for the fuel pressure regulator. The Kappa plenum has the different size and shape throttle body flange.
Last edited by Fingers; 12-10-2025 at 02:45.
Paul.
Sat in a real one, may never wash again!
I best make sure I padlock the bonnet on my V6 Thesis next time I'm attending an event...![]()
Richard C
I still haven't seen the Thesis Richard.... I must get out more!
Gents there are also the Lancia Thema components, which results in the following arrangement; You will note that the Thema plenum is shaped to accommodate the dual flap throttle body (something I originally missed, and necessitated re-purposing of the original 164 plenum!!)
Last edited by Griff; 12-10-2025 at 14:02.
John. Looks great.
So it looks like?
The Lancia plate can be unscrewed from the valve cover
You machined the plenum and somehow got HF logo on (how?)
Last edited by hollytree; 12-10-2025 at 11:53.
I eventually ended up with this arrangement, the Abarth HF badge came from ebay, and the Stratos badge was laser cut. Lancia STRATOS KEYRING HF RALLY RX 3.0 | eBay UK
I think I still have the original 3.0 V6 LS plenum in my boxes of spares
Last edited by Griff; 12-10-2025 at 14:51.
Steve, yes, the Lancia Plate can be unscrewed from the valve cover.
The Thema (& Thesis) collection is in five parts, the two valve covers, the ignition lead cover, and the decorative strip (yellow on my car)
There is a chap on ebay Germany that has three of the parts;
Ventildeckel Zyl. 4-6 Valve Cover Lancia Thema 3.0 V6 126 kw 60564956 | eBay.de
Ventildeckel Zyl. 1-3 Valve Cover Lancia Thema 3.0 V6 126 kw 1993 60572921 | eBay.de
Abdeckung Leiste Ventildeckel Valve Cover Lancia Thema 3.0 V6 126 kw 1993 | eBay.de
He is the chap I got mine from,
the fifth is the HT Lead support tray F?hrung Z?ndkabel Support Spark Wires Lancia Thema 3.0 V6 60564957 | eBay.de
there is also this plenum on ebay Germany that could be used as a basis
N V stutz ansaugkr?mmer v. f?r ALFA ROMEO 164 (164 ) 2.0 V6 TURBO 1987 -1998 | eBay.de
or this one
ALFA ROMEO 916 GTV Spider ORIGINAL Ansaugkr?mmer 3.0V6 12V 60591769 | eBay.de
My plenums were milled, the first (24v) just to relieve the space for the HF badge, and the second (12v) to allow for the HF Badge, and the laser cut Stratos font.
Both badges were then epoxy glued into position, with appropriate high temperature stuff, and have never given any indication of moving since.
Hope this helps, if you need any more info, let me know
Last edited by Griff; 13-10-2025 at 11:44.
I managed to get hold of a Thesis plenum, and then just machined off the Alfa Romeo off the over cover and then machined in V6 24V (enough thickness to remove the original writing and then machine in the v6 24v, after all it is just a cover), then just powder coated. It would be equally possible to keep the alfa plenum with V6 24V on it and then machine in whatever you wanted on the other cover.![]()
Thanks, I hadn't found this once despite me looking. However it certainly is different to the Alfa one fitted to mine.
See picture of one for sale on ebay
https://www.ebay.co.uk/itm/317130353...102727.m162921
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