I am about to put a 2 litre bottom end into my mk2 8v along with a gas flowed head and bigger exhaust or inlet valves. Just wondering what BHP I should expect and what this would equate to on the road? (ie, 0-60 or 30-70 times) Also, what would be best, larger inlet or larger exhaust valves? Cheers
35mm exhaust valves are the way forward... I previously had a 2L 8v mk2 digifant...Stage 2 head (40/35) Schrick 276, Supersprint 4-2-1 & full system. Made 155BHP & 153lbs/ft @ Stealth.. Best 0-60 was 7.44 @ GTi Inters & 15.84 1/4. Not bad for a 5door 8v on 16" wheels with no ATB diff etc BHP should be 145-150BHP & maybe a touch more depending on cam choice & how well it breathes/revs!
Excellent! Sounds like I'll be going ahead with that then! From what I have gathered though, with the 2 litre block, good torque figures can be obtained. Is that right?
You will need to do something with the standard clutch set up... It won't last 2 mins with a 2L block etc etc I used a 16v pressure plate & 8v LuK friction disc ..& that was OK
i currently ran 15.81 at Elvington Drag in York in my 1.8 8v Digi. mods are 266 kent cam / polished+ported head (std valves )/ported standard manifold / 2.25" stainless system /k+n cone. looking at the 2L bottom end conv. i will be putting new piston rings on . are bigger exh. valves essential ? (if so , then i need a new head again !) also should i get a wilder cam ? i want to cut the 1/4 mile by around 0.5 sec. dont want to go 16v ...as i like the idea of an 8v whippin butt was considdering a 25 bhp shot ontop ??? also what clutch recomendations ? is mk2 head gasket the right choice ? and is the 2E dizzy and new head bolts all that is required ? thanks
Not a bad time for the mods. I'm guessing by 266 you mean the duration ? which would be a Kent GS1H hydraulic profile. More torque right through the rev range would certainly help if its a road weight car so 2ltr would be good. You'll need a 2ltr head gasket for the bigger bore of the 2ltr, go for the multi-layer metal type gasket (they're EXELLENT), i may be able to dig out a part number but a decent engine parts supplier or factors should be able to help you. A big valve head will also help. If you DO go for the 2ltr conversion you'll have room for bigger inlets & exhausts (they will also work on an overbored 1800), BOTH will help increase power. I you speak to the RIGHT people, you should be able to have bigger valves fitted in yr current head and the throat and port area opened up to match. A lot of companies will say "oh you'll need one of OUR heads as the porting is different for big valves mate" !... Cr8P ! find someone who is willing to fit the larger valves and then re-port to suit, they ARE out there. The cam is a bit tame, look towards something with around 280 degree's duration and about 70 degree's overlap as a max to keep the engine nice for road use and extend the rev range a bit, it should then peak around 6-61/2k. You SHOULD be able to get away with a 16v preasure plate and a 8v disc or call Helix Autosport, they do a range of clutch's for road use. Head bolts... new standard should be fine, not sure about the dizzy tho, a search on the 2ltr 8v conversion tread should put you right.
thanks can you recommend a 'head gasket ' and someone who will do the BIGGER valves on my already ported head. (send me a PM if you dont want mention names) on the forum. as to cams , i thought a 280 degree cam was too much for hydrolic followers.
No problem at all. I'll get the thinking cap on !... Give me a day or two. No probs with hydraulics at that.
Just go to VW/GSF & ask for a mk3 Golf GTi 16V "ABF" head gasket... They are the multi-layered metal type (as used on my 2L 8v conversion)
You can also use a 'AGG' 1997 8v engine gasket as this is a layered metal one too. (probably same VAG part number?) This is what I've got in my MK2. 2.0 bottom end (from 1997 MK3 Golf GTI 'AGG' Engine Code) Kent GS2H Cam Gas flowed head with standard valve sizes. 145bhp/145lbft. Black diamond 8v clutch. Uses standard MK2 dizzy and MK2 pipework, by using TSR blanking plate and TSR dizzy conversion ring on the MK3 block. The torque figure is available pretty much through out the rev range. Feels nice and quick, very easy to overtake in. 40mph - 70mph (third gear) is just over 4 seconds. Nice cheap and cheerful DIY conversion. Lhasa2008
if my 2L bottom end is a 2E code should i stil use a mk3 16v gti ABF head gasket ? also is the pressure plate from a mk3 gti 16v and and disk from a mk2 8v digifant ? dizzy straight from mk3 GTI 8v '2E' ? is there no clutch kit to suit a 150 bhp mk2 ? is the KENT 266 worth changing for the NEWMAN 272 (is a 276 too lumpy ? ) " Also looking for a bottom end " thanks for the help ...
May be an idea to fit the stronger 02a cable change gearbox too, so then you can use the larger diameter G60/VR6 clutch
Yep! The Black Diamond 8v clutch kit (from C&R) has worked well in my MK2. I've done about 15,000 miles with this clutch. The previous standard clutch lasted about 10 weeks!
300 for the BLACK DIAMAND clutch !!! with regards to the pressure plate , is it a mk3 gti 16v pressure plate to use with the 8v mk2 gti disk ? also just bought a NEWMAN 276 cam ........
Paid about 150 for my Black Diamond Clutch kit. It was just a normal uprated one, which came with it's own pressure plate. I believe you need the MK2 16v pressure plate, rather than the MK3 one. I'm sure someone will be able to confirm this. (I just used everything that came with in the box with the black diamond one.)
Just found the old receipt 108.00+VAT (with 5% ClubGTI discount) from C&R Stock Code: ZCKIT Bought it two years old now. I didn't realise it was that long ago! But no clutch slip, and has worked 100%, light clutch pedal still too. HTH Lhasa2008
just measured my exh. valves and they are 34.78mm . does this mean that i already have the larger exh.valves ? as i was about to send it off just for that purpose. if so, looks like a NOS kit (25 bhp jets ) will be going on thanks
