Matt D used to but he's got a 9A now I believe speedo's 2 litre 16v is a BRM built KR block I may be wrong but I think a KR block needs a fair bit of machining work internally so the 2 litre crank can physically turn Under piston oil squirters can't be used either Just get a 9A or an ABF
I dont think there is any satisfying me The KR is running so well and I love the top end pull, I was told that the 9a doesnt rev as well as the KR. Any idea what has the best potential KR or 9a?
If you've got a 1900 KR you won't get a 'revvier' engine 9A will not rev as well unless you go for some mad cams (IanBs 9A revs very well on his 268/276 Schricks) As you may have read on here last week, I got 171bhp 151 lb/ft at Stealth last Sunday with stock 9A head and KR cams My 9A peaks at just over 6k - where (ie what rpm) is your peak power?
Mines a 2.0l KR. You don't need much machining. You just have to take a little divot out of the oil pump platform so number 4 conrod misses it. Gary is right in saying you can't use the under piston oil squirters. Mine revs pretty good.
KR block 82.5mm pistons 92.8mm stroke crank, SP Performnce cylinder head, Stealth inlet cam mod (running two exhaust cams), K&N air filter, Scorpion exhaust, V-Sam Pro for programmable fueling and ignition via my own laptop, Rebuilt gearbox with APW 5th gear (0.85:1 instead of 0.91:1) Don't ask the power output as I've not had it on the rollers. I'll get round to it one day
it doesn't matter which block you use kr or 9a. Whith kr cams and 42mm inlet (my set up whith kr block), you would not rev happy after 6000-6200rpm. Its the 92.8 crank that limits high revs. As Gary said you need "mad" cams if i remember corect my mechanic did a patern... so i use the under piston oil squirters.
I think that the question is if I need the extra mid range torque or not, your 2lt must go well in the mid range. Have you had it on the rollers yet?
no rollers tested yet.... BUT! at the mid range it pulls much more than as a standard kr 1.8l there is no 4000rpm step enymore now it pulls from 2800rpm! i don't have to rev it the hell out of it much more quicker now
Your're better off with a factory 2 litre. My old 2 litre KR went t1ts up at Combe in july. All the teeth were sheared off the intermediate shaft gear where it connects to the oil pump shaft. I only know of one other person that this has happened to but the 9a is a better design here
I bet anyone here who has gone 2 litre on their 16v will agree with me that they are so much 'nicer' to drive with mid range torque than an 1800 'screamer' That goes for road *and* track use
mine has 40.000 km. No problem so far! when i bored it I change the oil pump and the intermediate shaft gear where it connects to the oil pump shaft. i hope that not happens to me thats correct Gary has nothing to do with the 1800 'screamer'
I think that for now Im going to leave the car as a 1.9lt, I cant quite decide what direction I want to take the car ultimately.
