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Post by Zed. on Sept 27, 2021 20:38:04 GMT
AARRGGH! why is evryone saying that  more power = faster to the scene of the accident  Rich. |
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Post by dadbif on Sept 27, 2021 21:15:24 GMT
After months of pissing around you are heading in the right direction !!
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Post by Zed. on Sept 27, 2021 21:26:08 GMT
but dropping the Mazda engine kills any chance of competing in roadcar classes - also opens all possible modifications.....
also means an expensive full rollcage & HANS crap if I want to compete...
Rich.
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Post by dadbif on Sept 28, 2021 6:16:37 GMT
I didn’t realise that was your goal. It would be a pity to let that lovely engine go to waste.
Dry sumped, decent cams….guaranteed 200+ on TB’s
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Post by scottydugg on Sept 28, 2021 8:28:09 GMT
Time to buy a second shell and do both, one a quicker turnaround project? One a long term?
Both options sound great in all honesty, but better to have a running/competing car than a project car.
Seat time>everything.
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Post by Zed. on Sept 28, 2021 9:15:32 GMT
I didn’t realise that was your goal. erm, sorta, origonal idea was to try hillclimb & sprint in roadgoing classes with a mostly standard 5  . then I started getting ideas It would be a pity to let that lovely engine go to waste it's supposed to be going in my Chevette..... another longterm project  Dry sumped, decent cams….guaranteed 200+ on TB’s ah, yes, about that...... was over that on carbs  Time to buy a second shell and do both  Ha! might already have a pair of Eunos's finest automobiles  one a quicker turnaround project? One a long term? have you read this thread? true but.... I've not driven competitively for ~20 years  and that year I destroyed 2 rallycars, on 2 rallies so I went back to navigating  Rich. |
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Post by Zed. on Sept 28, 2021 14:28:08 GMT
curiosity got me so....  dug up my Mazda & Ford clutch-alignment / input shafts as these are easier than using google to get their dimensions (spiggot both ~15mm diameter according to my dodgy el-cheapo digital vernier caliper)  the Vauxhall XE engine is a fwd unit so has no spiggot-bearing fitted as standard, in rwd conversions a Ford 'crossflow' needle-roller spiggot bearing is used and one of these had been fitted. luckily the Mazda input shaft is of compatable diameter to fit. this now points towards esier adaption of the Mazda / Asin 6 speed gearbox but this will involve cutting the face off & welding a Vauxhall friendly face on.... this way will allow retaining the ppf & origonal gearstick position and the 6speeds close-ratio gearkit (as the dogleg'd 5 speed) more thinking & measuring to follow - now looking for a dead 6 speed to canabilise the bellhousing as a test gineapig. Rich. |
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Post by scottydugg on Sept 28, 2021 14:33:15 GMT
You keep looking for reasons not to, but things keep falling into place  |
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Post by Zed. on Sept 28, 2021 14:37:48 GMT
You keep looking for reasons not to, but things keep falling into place I'm actively looking into fitting this now, activly looking into the option of reverting back to 1.6L if/when I get frightened I've had a standard XE in my '65 MG Midget and that was undrivable (on 165/13 tyres ) plenty of silly ideas in the past! Rich. |
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Post by dadbif on Sept 28, 2021 21:26:52 GMT
Excellent news, it will be far simpler to install than all the modifications you were planning on the Mazda 1.6. I think…
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Post by Zed. on Sept 28, 2021 21:57:43 GMT
I'm still going to play with the 1.6, - I might have started port-boring the turbo head casting so Rich. |
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Post by Zed. on Sept 29, 2021 19:28:22 GMT
as if by magic, some thinking & measuring happened...   needed some dimensions to plot the bellhousing cut&shut.  these are the Mazda gearbox input / first-motion shaft distances from the bellhousing's engine-face. (10mm & 31mm respectively) - not needed to fabricate the 'hybrid' but usefull to have as will show how much further rearwards the Vauxhall engine's rear face will be compared to the Mazda engine underbonnet.  next, the Mazda gearbox... mk1 5speed top & mk2.5 6speed lower  the 'bellhousing' area, both are somewhat different but share identical dimensions @ engine face.  the Vauxhall / Ford bellhousing compared to the Mazda 6speed.  one of the considerations, the clutch slave-cylinder mounts to the Mazda bellhousing, this will be in the section to be removed and those drillings will be in the area taken-up by the Vauxhall engine - some thinking to follow....  comparing a Vauxhall 2.0L 'XE' flywheel (right) with a Mazda 1.6L B6 (left) the standard Vauxhall is ~ the same wieght as a lightened 1.6L Mazda flywheel! (Vauxhall flywheel can be lightened and skeliton steel flywheels are available to 3.5 / 4 kg and less!)  Vauxhall flywheel.  thought I'd check if it fitted in a Mazda bellhousing  luckily it does! project is slightly eaier now but still take some engineering / fabrication / welding & luck!  this shows the bellhousing / rear face of a Vauxhall cylinderblock, also shows the crankshaft centreline is inside the block - slightly stiffer than the Mazda setup...  the previous photo was taken as reference to setup this one, as a guesstemate of the Vauxhall crankshaft centre compared to the Mazda (Vauxhall fitting aftermarket conversion bellhousing & Mazda engine - gearbox baffle-plate)  from gearbox side. can see the different bolt-pattern and size with the Mazda being slimmer!  Vauxhall being shorter than Mazda.  drivers / clutch-fork side.  lower edge, the aftermarket Vauxjhall / Ford bellhousings have a 'window' and do not seem to have strength issues - also handy as can be lazy with clutch-alignment & tighten clutch bolts after fitting the gearbox Rich. |
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Post by Zed. on Sept 30, 2021 15:21:08 GMT
more measurements...  I have a Ford type 9 / Quaife 5 speed gearbox to rebuild for a friend so fitted the Vauxhall XE conversion bellhousing to get some 'working' measurements.  the Vauxhall engine differs from the Mazda as the crankshaft & flywheel protrudes into the bellhousing by ~21mm more than the Vauxhall.  this is the dimension I'll work around, the engine side of the clutch splines.  inside the gearbox, first thing I saw was the selector's 'rollpin' is missing so that is either in the bottom of the gearbox on it's magnet OR it has gone through the mesh and spread around inside now to draw a basic cutting-list. more to follow.... Rich. |
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Post by Zed. on Oct 1, 2021 19:15:54 GMT
another (slight) tangent again.... engine-mounts. I've been rummaging about for engine-mount parts...  I have stuff....  the bushings are Ford Escort Mk1 or Mk2 (cannot remember, they're slightly different widths), and have for over 50 years been the mainstay of countless race & rallycars on it infamous 'Worldcup' crossmember fitted to mk1&2 Escorts. the tubes are machined to suit the bushes and the saddles origonally were intended to be Mk2 Astra drivers side / front engine-mounts - leftovers from ~15 years ago. I have several other design saddles and also brackets that can be welded to chassis-sections. theres several heavy-duty and competition spec mounts available for the 5, I had intended to fabricate some to suit the 1.6L engine nut as I'm now looking towards the Vauxhall engine I really need to make something so my stash has yet again helped I'll be looking more into mounts once the bellhousing situation is finalised and I can actually get the engine into the car. Rich. |
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Post by dadbif on Oct 3, 2021 7:24:54 GMT
What size are the bike TB’s you got for the Mazda engine, won’t they be a bit small for the XE?
I had 45 Dellortos on mine before switching to 45 ITB’s.
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. then I started getting ideas 
le sigh
Jul 15, 2023 20:03:52 GMT
le sigh
Jul 15, 2023 20:03:52 GMT