57 replies to this topic

[Steve220]

its a shame that rolling road readout doesn't have traditional units of measurement. ie mph, lbft.

[PlugExploits]

Converted to old money

94.2 bhp at 5840rpm going 106.5 mph

94.2 ft lb torque at 3650rpm going 66.6 mph

Handy iPhone app

[vx220]

Have you collected yet?

[PlugExploits]

No not yet. Aseries spares have it now. When they
recieved It they said it was only running on 3 cylinders and had a water leak so they have had a little fault finding to do. They did a compression test showing 170 140 160 160 and the think they have found the cause being the rockers hitting the cover. It's probably the reason the nuts were coming loose to. They said they would call me after machining the inside of the cover and give me some new compression test results. I'm hoping to get it back in a few weeks but I have been saying that since November.

Edited by PlugExploits, 25 February 2015 - 08:00 AM.

[Guess-Works.com]

Just imagine trying to do those adjustments with a carb and a dizzy...  old skool....

[PlugExploits]

Bit of an update as I got the car back last week. There has been alot of tweaking, fixing, redoing happening. Now it is ticking over very lumpy and it's very difficult to drive slowly. One because the throttle is extremely responsive and any small bump makes you foot move on the peddle due to the not so soft mini suspension. Also the lower revs are not so smooth so slow speeds can be a bit jerky and the car will very occasionally cut out. Spoken to the rolling road and its booked back in on the 8th August to iron the map out. So from now till then it's flat out everywhere!! Pulls very very hard from 4000 rpm but can still go through villages in 4th at about 1500rpm no problem. Cruises at 80mph at 4k rpm and been off the clock (110mph) at 6k rpm. A-series spares said if it went to them at 94bhp then it should be over its 100bhp target now. Will be interesting to see the next and final dynographgraph.

[ryomini]

Like this well done

[psmini]

Good thread and relevant to me.  Having my engine rebored to 1293 with a  274 cam, big valve head and standard ECU.  Not expecting the world but I've been used to my Mayfair's 53bhp.  Will report back when I get it back which should be in about 10 days time.

[PlugExploits]

Good thread and relevant to me.  Having my engine rebored to 1293 with a  274 cam, big valve head and standard ECU.  Not expecting the world but I've been used to my Mayfair's 53bhp.  Will report back when I get it back which should be in about 10 days time.

Please do, will be interesting to compare. And your in Northampton to, we could compare on Tarmac!!

Edited by PlugExploits, 24 July 2015 - 04:43 PM.

[brivinci]

I have been reading through this thread as well and VERY relevant to me as well. I really wanted to do the SC conversion on my SPi as I am sick of it but it turned out to mainly be mechanical issues. A full rebuild later (and all my funds for the SC unit) and I am back!! Just drove the car to work today for the first time. Very pleased so far.

 

SPi bored 40 over (what does that make it again...)
Piper BP255

Calver ported head with 35.7/29.2 valves

Swiftune dual springs

Claver followers

Stock lifters with upgraded shaft

Swiftune veneer cam gears with new ISIW chain

Maniflow injection LCB, no cat, and Maniflow rear section

New OEM crank rebalanced

Motor fully blue printed

 

I was having issues with oil consumption, backfires and stutter/stall effects on throttle blips. Not anymore! I can already tell the difference. Motor feels really strong and revs very clean. I have not taken it to redline yet but it feels really nice. This setup is said to give around 82-85bhp. I'd love to drvie a stock SPi to really feel the difference now.

[firstforward]

I have been reading through this thread as well and VERY relevant to me as well. I really wanted to do the SC conversion on my SPi as I am sick of it but it turned out to mainly be mechanical issues. A full rebuild later (and all my funds for the SC unit) and I am back!! Just drove the car to work today for the first time. Very pleased so far.

 

SPi bored 40 over (what does that make it again...)
Piper BP255

Calver ported head with 35.7/29.2 valves

Swiftune dual springs

Claver followers

Stock lifters with upgraded shaft

Swiftune veneer cam gears with new ISIW chain

Maniflow injection LCB, no cat, and Maniflow rear section

New OEM crank rebalanced

Motor fully blue printed

 

I was having issues with oil consumption, backfires and stutter/stall effects on throttle blips. Not anymore! I can already tell the difference. Motor feels really strong and revs very clean. I have not taken it to redline yet but it feels really nice. This setup is said to give around 82-85bhp. I'd love to drvie a stock SPi to really feel the difference now.

 

C'mon is that all we are going to get "Very pleased so far"

[psmini]

 

Good thread and relevant to me.  Having my engine rebored to 1293 with a  274 cam, big valve head and standard ECU.  Not expecting the world but I've been used to my Mayfair's 53bhp.  Will report back when I get it back which should be in about 10 days time.

Please do, will be interesting to compare. And your in Northampton to, we could compare on Tarmac!!

 

Great, didn't see your location originally!  Definitely up for that

[brivinci]

I didnt want to hi-jack this thread too much:-)

 

I actually had a wheel bearing issue so the car is off the road again BUT while it was on the road, it really felt like a great setup. I havent pushed it yet. Only revving to 5k but it pulls well. Not having another (stock) Spi to compare it alongside, its hard to say just how different it is. Its been on and off the road so much over the last few years I can barely remember what it was like...aside from the fact that is ate a liter or oil every 300 miles, smoked out anyone behind me like Bonds Aston would and had a terrible stall/hiccup/backfire issue. All that is a thing of the past.