A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

i had a trip over to the rollers today, to check the engines health, mechanically its almost the same as it was when last run up, the only difference being ive fitted some slightly longer inlet trumpets, which it really liked, they have moved the torque up the rev range a bit, and it hangs on for longer which has added 16bhp, its now got 283 bhp, which is stunning for a bmw m20. we did also try some 102 octane fuel, that did make a bit more power but only a bit, another 2bhp to be exact, so i wont be buying any of that, that said the 102 did hang on longer, so if the engine were to rev to say 8500 i think the difference may of been more

[katana]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

Very respectable I guess the top end misfire is cured then?

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

Very respectable I guess the top end misfire is cured then?

yes proper fixed, i was pretty certain as several times id tried it round the industrial estate, where i could run it into the limiter and hold it there. i did think it felt stronger than its ever done certainly the way it pulled right to the limiter, but i put that down to where i was drive.

Doing the maths the extra power and cars diet has improved the power to weight ratio by 35bhp/tonne, no wonder it felt quick

i struggled to remember what the final weight was but seeing as ive now found a pic i will leave it here for reference, hmm, the pic seems to of gone missing, anyway it weighs 938kg or 1028 with me in it

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!



i had another outing in the car a CSCC race at silverstone on the international circuit, i have raced at silverstone numerous times but never this configuration, so only 3 corners would be the same as i have previously driven ten years ago, so basically i didnt have a clue where i was going, never good, and im not great at learning new circuits at the best of times, let alone in a car i still havnt really got the hang of and isnt the same as when i last drove it!

just to recap since i last drove it i re engineered the front discs so i could run the same 8x15 wheels and 225/45/15 tyres all round. as well as fitting a thicker front anti roll bar. my thinking being that on the 7x15 fronts 205/50/15's the car was ok, but had more understeer than i was happy with, for thruxton i tried some 215 tyres on the 7 inch rims the front just didnt feel nice, it seemed to have more grip but felt rather boat like and wallowed rather than changing direction nicely.

going out on track i was going to be on the back foot, virtually all my competition had raced the circuit before and quite a few had tested the day before. as it was to be a 40min pit stop race with (for most) a driver change, i decided not to practice a pit stop (even if you dont change driver you have to pit and get out the car and back in again) so i hoped a long un-interrupted 30min qualifying session would get me reasonably well upto speed.

other than some leg pulling as i was recognized scrutineering went without issue

Exiting the pit lane with the rear end snaking in 3rd, i thought yeah this feels fast, but it didnt really once out on track though, with a power to weight ratio of getting on for 300bhp/tonne it should feel fast, in practice the power delivery is so flat and smooth and only needing to use 3,4,5th gears it just never feels fast out on track, doubts were dispelled when i caught up with a triple webered E type jag and breezed past it in a straight line. The extra grunt at the top of the rev range did make its presence felt though, as it meant i only needed 5th gear at the end of hanger straight, and 3rd worked right through the twisty bits, so not a lot of gearbox stirring needed i could concentrate on learning where i was going.

despite the weight distribution changing for the worse and using old front tyres the front end changes worked well, the car was turning in well, in fact it was pretty neutral, the rear drifting a little if i turned in hard, the new stack dash did flag something up i would of missed before and that was oil surge going into the tightest slowest left hander, TBH i didnt worry me too much, i wasnt on the power when it came up and pressure was still in the low 20's. Unfortunately just as got the hang of whether i was going and starting to try and push, the Thruxton sickness reappeared. i tried to contain it for a lap or two but then pulled off. Thankfully i didnt actually puke this time, i now know for certain i am getting car sick, it only happens at circuits where there are a couple of tight right left direction changes close together.

back in the pits, we just refueled, added half a litre more oil ( this was the first time i had run the car on the max, not a bit overfilled) dropped 1psi out the n/s/f tyre, and headed into town to find some travel sickness pills.

i had qualified very much mid field, 18th out of 36, to be honest know it was the cars straight line speed that saved me from being at the back of the grid, i simply just didnt have enough track experience, but i figured out with others to chase down i would get quicker in the race.

it was to be a standing start race and in the drivers briefing we were all warned that race control had lots of cameras and observers watching the start, any movement after the lights came on would result in a penalty. sitting on the start as the rest of the grid formed up behind me i felt the car was moving slightly, mindful of the drivers briefing and no handbrake i held the car on the foot brake and tried to hold the revs just over 3K, which i wasn't going very well, so i was concentrating on trying to get that right when the lights went out and everyone was off, the end result of that being the cars behind got the jump on me, i reacted with too many revs and lit the rear end up loosing a couple of spots in the process.

at least i had a decent enough idea of where i was going to be competitive and had a good dice with first a 911 and then a 944 both in the above picture i got past them both, interestingly i was able to get past the 944 on the brakes, keeping an eye in the mirrors it was clear the lower powered fwd cars were practically as quick over a lap, looking ahead i was pleased to see i was catching another beemer an E21, i know that car slightly and round brands it cant get anywhere near me, but an unfamiliar circuit is another matter, still i was catching him and hoped to pass it when i noticed the car push on in a couple of corners, more throttle problems, this time it was sticking. i pitted, got out bent the pedal which seemed to fix it, got strapped back in and headed out again, a couple of corners it was sticking again big time, so i pulled off for good.

looking at the car the problem was obvious, in use the pedal box has bent and that was jamming the throttle. another DNF, oh well, it should be easy to fix!

i have to say despite the dnf i was pleased how it went, i enjoyed the way the car handled and actually got to race other cars, the sea sick pills seemed to work too

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

i whipped the pedal box out, and welded in a brace between the brake cylinders



i reinforced the throttle pedal pvot, next i changed the throttle cable attachment, robbing some bits from an old linkage kit, the outer cable is now retained by a retainer that can pivot, before when you got to about the last 3rd of travel the linkage would bend the inner cable and pull it tight up against sides of the drilling in the cable retainer, it was only a matter of time before the cable either snapped of frayed, now when you are deep in the throttle the cable retainer will pivot, keeping the pull on the inner cable straight, so it doesn't rub on anything or get bent, so in theory ive seen the back of throttle issues. i must say i now think that when its time to get a pedal box for the 2002im going to spend proper money and buy a tilton or AP box

[alladdin]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

i did the pivototing cable holder on a westfield. it was stretching the cable every outing but once i fitted the pivot it was sorted.

[SidewaysMk1]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

i had a trip over to the rollers today, to check the engines health, mechanically its almost the same as it was when last run up, the only difference being ive fitted some slightly longer inlet trumpets, which it really liked, they have moved the torque up the rev range a bit, and it hangs on for longer which has added 16bhp, its now got 283 bhp, which is stunning for a bmw m20. we did also try some 102 octane fuel, that did make a bit more power but only a bit, another 2bhp to be exact, so i wont be buying any of that, that said the 102 did hang on longer, so if the engine were to rev to say 8500 i think the difference may of been more

Very good figures. What camshaft does it use?

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

schrick 302

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!



after Silverstone i was at a bit of a low ebb, net race for the cscc series was oulton park, but i decided to skip it, oulton is a long way from here, and i just didnt facy treking half way across the country to a circuit i didnt know to have more problems, the following round was Anglsey again a very long way to a circuit i didnt know, and potentially more and DNF's. id actually decided to skip that event too, until i got an email the entry fee was very reasonable and the meeting a double header so i stuck in an entry.

leaving ely at 4.15pm on friday i arrived at the circuit 9.30pm only to realize what seemed like every man and his dog had arrived on thursday and tested friday, that didnt leave me feeling great about the place, basically once again i was going to be the only one who didnt know the track.

getting up saturday it was wet and drizzling, knowing my toyo R888's are not good in the wet and are 8 years old i had concerns about leaving them on the car, but it certainly wasnt wet enough for the Uniroyals, in the end i fitted a set of super soft Kumho V700's despite being brand new and unscrubbed as long as it didnt rain really hard they would work.

qualifying went without issue, no real issues and i got to grips with the track layout and gears required fairly easily, the car behaved and it was all quite undramatic, much to my surprise i had qualified P16 overall (out of 33) and P1 in class, the track was drier than i expected so arguably the supersoft tyres were quite the right choice, yes they did grip and gave me some confidence well but judging by the state of the N/S/F tyre it was on the verge of melting!

as usual with a cscc race, it was a pit stop race, something i dont really like doing as i unlike most my car isnt double driven. more correctly i dont mid doing the pit stop i just dont like having to get out the car and back in again! i would much prefer it if i just had to stop for a set amount of time, and not struggle with belts and hans device.

race one, by now back on teh 8 year old Toyo 888's i got of to a decent start, there, were a couple of points where i fluffed gearchanges which im afraid is something to tend to do until im really familiar with a circuit. i got tucked up behind a RSR Porsche 911 which definitely cost me a couple of spots, but i really enjoyed the first half of the race and certainly proved with more track time under my belt the car and i could be a serious contender fro running at the front end off the grids, to me the car doesnt feel fast but being able to dice with TVRS and out drag an E36m3 in a straight line shows the cars not slow. the link below is the start of the race upto the pit stop.

https://www.youtube.com/edit?o=U&video_id=xhgj40xruJ8&ar=3

second half of the race didnt go great, but only because two laps later i got bloody car sick again, despite taking travel sickness pills!! i spent several laps chucking my guts up again, puke and leather gloves certainly make the steering wheel slippery! so after the pit stop i just circulated best i could, which meant i watched the mirrors and no one caught me, for sure i cost me a class win but to be fair given my chucking up and no previous track knowledge i was pretty happy with P2

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

race two was on sunday, same circuit, but different layout, the coastal layout leaves out a bit of the circuit but introduces a corkscrew section, that worried me because i know a series of tight left/right/left is likely to make me feel ill, the only plus point is that layout takes out two high speed braking points which go into slow tight corners, again something which doesn't agree with my stomach! as sunday was essentially the same circuit but with a bit left out, there was no qualification session, which means my P1 from saturdays qualify would stand. the organizers had however allowed a 15 min un-timed practise session.

out we went for practise and at about the second corner in i realized i had made a school boy error, i could smell fuel, and strongly at that, i instantly knew i hadn't replaced the fuel filler cap when i had topped the tank up, i also knew fuel would be collecting in the boot floor above the rear silencer, dam! i really needed to experience the revised track lay out, i also knew the session was very short and the marshals had probably already spotted me loosing fluid and reported it to race control. i figured id aim to do 3 laps, sure enough as i went past the start line for the second time the meatball flag (black flag with orange spot meaning mechanical defect) was hanging out with my race number attached. that cut my session short and gave me a basic idea of the shape of the corkscrew if no idea how quickly i could take it.

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

for the start of race two even through i launched at lower than normal launch revs the rear tyres didnt hook up and i immediately lost ground, which lead me to a tussle with a another E30 which lasted until the pit stop. i had more speed than the other e30 i just couldn't convert it into an overtake, basically the tyres are past it, the rear end wouldnt hook up and if you watch the video your see i miss most apexes by a mile because the front didnt have any real grip either and being the last race of the weekend there was a lot of loose rubber on the circuit, so quite a few times even the correct line wasn't usable.

race video part 1 https://www.youtube.com/watch?v=a-nSPkNf6ZQ

the pit stop wasnt great, i had my mate graham with me along with his other half but julie has no experience of strapping blokes in race cars, we also had a hick up getting the hans right, so one of the scruts held me until he was happy, as is often the case the second half of the race after the pit stop isnt very eventful, because by that point the natural order of things is decided, but it was still a great race, i didnt realize until i was back in the paddock, but i won my class on sunday. so im really pleased with the whole weekend,

race vid part 2 https://www.youtube.com/edit?o=U&vid...9Iyh96Zp0&ar=3

the car behaved itself, and to come away from a strange track with a 1st and 2nd im well chuffed.

next stop is in a week, Brands GP circuit ive enter a couple of sprint races with a different club the cmmc southern

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

a mere two weeks after Anglsey i was out again, Brands Hatch Grand prix circuit this time. the car got minimal prep in between events as i was away scrutineering the weekend in between, it got an oil change, in an effort in increase rear end grip i disconnected the rear anti roll bar that was about it. other than i bought a new set of tyres, although they still had some tread left i felt my 8 year old toyo R888s were well past there prime, i couldnt get any more R888's and the newer R888R's werent yet available in the 225/45/15 size i wanted, having re-engineered the front end to take 8x15 wheels i didnt want to drop back to a 205 tyre, so opted to try something different and got a set of Nankang AR1's.

the cmmc meeting i had entered was a bit different to what ive done of late instead of a single min pit stop race this was to be two 15 minute sprint races, it was also a completely different set of cars, they were running modified saloons which ar every heavily modified and many very very powerfull and running slicks, and a production class, which were less modified and on road tyres, my car almost fitted the production regs so i got an entry as a "guest" car into the production class.

[katana]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

Aaaaannnnnd? Talk about leaving the reader wanting? LOL!

[Graham]

Re: A race bmw 316, m10, s14, m20, turbo, na, its been the lot!

Aaaaannnnnd? Talk about leaving the reader wanting? LOL!

yeah i know, i couldnt keep my eyes open, more updates later, ive actually been out in the car twice so lots to catch up on