MGB Mk1 Special V6

MGB Mk1 Special V6

Author
Discussion

DavoA

Original Poster:

14 posts

182 months

Friday 5th February 2010
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Have fitted a Mitsubishi 3500 V6 into my 1967 Mk 1 MGB

mgtony

4,046 posts

196 months

Friday 5th February 2010
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Thats a stunning looking conversion. Does the standard bonnet clear the engine? I know with the Nissan 200 engine you need to put a bulge in the bonnet for it to clear.
Any more pictures of the car?smile

160steve

707 posts

198 months

Friday 5th February 2010
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I would eat my dinner off that engine bay. Its cleaner than most of the crockery in my house!

MGJohn

10,203 posts

189 months

Saturday 6th February 2010
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Superb! We really need to see more information, details and illustrations...

DavoA

Original Poster:

14 posts

182 months

Monday 8th February 2010
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Thanks guys. Engine sits low, had to lop 40mmm off steel sump extension to maintain acceptable clearance. Sump level with bottom of front x member.Have about 15mm clearance top of motor to nearest bonnet bit. Got car specs etc in word format, but don't know how to post!!!

900T-R

20,405 posts

263 months

Monday 8th February 2010
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DavoA said:
Got car specs etc in word format, but don't know how to post!!!
Select text in Word, copy and paste in PH message box...

DavoA

Original Poster:

14 posts

182 months

Wednesday 10th February 2010
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Tried...............won't work

chormy

635 posts

202 months

Thursday 18th February 2010
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Ford 1.8 Zetec on bike carbs.

Not quite as nice as the V6 , which is very nicely done.

DavoA

Original Poster:

14 posts

182 months

Friday 19th February 2010
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Zetec??? I dont know if we get these in Aust?
Mate, how do you get on tuning the carbs
Looks like a nice job. Did you use another g box
Looks like you able to avoid cutting back panel, and you kept heater
Prob necessity in UK

niva441

2,023 posts

237 months

Friday 19th February 2010
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The Zetec fits in there nicely, looks like there's slightly more room than the B series.

oneaves2005

16 posts

193 months

Friday 19th February 2010
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This is mine, 190BHP K-Series

Ollie

www.teamneavesracing.co.uk

oneaves2005

16 posts

193 months

Friday 19th February 2010
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chormy

635 posts

202 months

Friday 5th March 2010
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DavoA said:
Zetec??? I dont know if we get these in Aust?
Mate, how do you get on tuning the carbs
Looks like a nice job. Did you use another g box
Looks like you able to avoid cutting back panel, and you kept heater
Prob necessity in UK
Uses the ford 75 gear box off mondeo, the carbs are 750 kwasaki carbs tune them the same as webers , 1.6-1.7 jets for fuel and balance
have just put new minilites on with 185 tyres when its nice weather I'll take it to the track.

DavoA

Original Poster:

14 posts

182 months

Thursday 2nd September 2010
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MGB Mk1 SPECIAL

ENGINE: V6 3500cc SOHC 24v 9.5:1 comp.
Stage 2 cams, enlarged inlet plenum and tracts,
extractors, dyno mapped Haltec engine management

POWER: 185kw (248bhp) @ 5500 rpm. 340Nm @ 3800 rpm

GEARBOX: 5 speed all sychro. 3.29:1 - .86:1

REAR AXLE: Borg Warner LSD. Ratio 3.27:1. 110 kph @ 2750 rpm

KPH @ 6000 rpm: 1st – 63, 2nd – 110, 3rd – 163, 4th – 206, 5th – 220 (+)

BRAKES: Original MGB disc/drum plus booster

SUSPENSION: Front – original coil and wishbone plus HD roll bar.
Rear – original leaf plus telescopic dampers and tramp rods

WHEELS: 6.00 x 15 inch 4 stud alloy with 195 x 15 80R tyres

WEIGHT: 950 kgs

RESTORATION: May 2005 to Nov 2008

OWNER: David F Ashby

(“Blaansh” is Norwegian for white one)

alfa pint

3,856 posts

217 months

Thursday 2nd September 2010
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Always wanted to put a Rover V8 in my first B but the bodywork always needed my V8 slushfund....

My newly acquired second B has immaculate bodywork and a slightly warm original engine, so once I've sorted the suspension out, I will inevitably start looking for something sweet under the bonnet.

Mitsubishi V6 eh? Lots of questions for you please!

a) Did you have any problems with engine mounts?
b) What are you using for a propshaft?
c) Have you had to do much to improve cooling?
d) Did you need to fabricate your own exhaust?
e) I'm assuming that the ECU and all of the engine management system would have had to be transferred across too?

DavoA

Original Poster:

14 posts

182 months

Friday 3rd September 2010
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“BLAANSH”

I purchased this 1967 Mk1 MGB in 1994. It was in fair condition mechanically but was rusty and cosmetically very tired. My aim was to mechanically modify the car to become a long legged tourer with some real go, and also carry out a full restoration so it looked like a standard car. My plan was to produce a package with a reliable non peaky 250HP and a weight of 900kg.
Finally in 2005 after storing the car since 1994 I began work.
I had in previous years used the cars engine and gear box to re-power a fully restored Austin Lancer. (See images of “Mabel”)
After consideration of power plants I purchased a secondhand Mitsubishi 4wd V6 SOHC 24v of 3500cc capacity. I had previous experience with these great engines and as they are north-south and very compact, suited the MG engine bay. Standard output 140KW - 185HP.

After removing all the unwanted fruit from the engine I mated a 5 speed Toyota gearbox driven thru a small flywheel and heavy duty clutch. Gear stick position is 2 inches further back than original and it only needed minor mods to the trans tunnel and engine bay. Of course upgraded cooling, air inlet and exhaust was required. The engine mounts required engineering approval as did the whole project. I adhered to the set of very reasonable rules provided by the authorities in Australia for Performance Vehicle Modifications.
Exhaust extractors fitted, enlarged air inlet plenum and tracts, stage 2 cams and dyno mapped Haltec computer gave me a very torquey 250BHP@5500.
I chose a suitable Borg Warner rear axle with LSD, 3.27 ratio and 4 stud 15x6 inch Mini-Lite look-a-like wheels to give me the touring speed of 68MPH(110kph) @ 2750. (See specs for greater details.)
Prior to the cosmetic restoration, I carried out all the mechanical upgrade work and in fact drove the car around rusty and ragged for some time to ensure my engineering was all OK and to iron out any bugs. This may sound easy, but I had probable removed and refitted the engine and trans 10 times during the build up to test fit, clearance and accessory attachment.
The resto was a full bare metal with new panels as nec and some reinforcing. Long time, but finally a brilliant job of fit and finish after painting BMW white. All components back in with all new bits as necessary. Electrical, trim, instruments, chrome and all new glass. Weight 950kg. Total time from whoa to go 31/2 years!
Driving the car is great! Off line accelerating in fantastic with wheel spin, but checked by the LSD - no axle tramp, rev to 6300 limiter, power strong and even from 1500 rpm with real excitement from 3500 to 5500. Toyota gearbox brilliant, into 2nd then 3rd up to 90MPH, easy to 120 with more to go, but wind buffeting becoming intolerable and car stability questionable.
Handling, steering and braking a bit better than original but not up to modern day standard. Who cares, this goes, looks and sounds great!

Google [bot]

6,692 posts

187 months

Friday 3rd September 2010
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Very very nice DavoA. Although...

DavoA said:
I adhered to the set of very reasonable rules provided by the authorities in Australia for Performance Vehicle Modifications.
Surely you jest..?!?!

Or was it sarcasm flying over my head?

DavoA

Original Poster:

14 posts

182 months

Friday 3rd September 2010
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Not a jest!! The final examination to determine that my mods complied with these rules, and the subsequent approval before road registration must to be carried out by the engineer who has tracked the course of the mods from the start. Also he has to put their balls on the line that all is correct before the licensing authority will license the car.

Google [bot]

6,692 posts

187 months

Friday 3rd September 2010
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Yes, I know, I'm in Aus too. Which is why I was questioning the use of the word 'reasonable' and further the use of the word 'very' which preceeds it..! smile