Johns cerbera rebuild and upgrade

[Engineer1949]

got on really well yesterday got the suspension for the near side rear all tacked up sorted a location for the ARB just the tracking tie rod to do waiting for a left and right hand pair of rod ends should be here today.

john

Untitled by Brundall Motorsport, on Flickr

Untitled by Brundall Motorsport, on Flickr

Untitled by Brundall Motorsport, on Flickr

Untitled by Brundall Motorsport, on Flickr

Untitled by Brundall Motorsport, on Flickr

Untitled by Brundall Motorsport, on Flickr

Untitled by Brundall Motorsport, on Flickr

[Engineer1949]

got some more done yesterday made the mount for the chassis end of the track control arm and mig welded in place then turned up the ends for the track control arms for the rear nearside suspension got them tig welded into the tube and fitted also fully welded the top a arm.

john

DSCN1930 by Brundall Motorsport, on Flickr

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[Engineer1949]

not a full day today sorting hydraulic steering on the dredger but got one end of the rear lower a arm fully sorted.

john

IMG_20151109_163752 by Brundall Motorsport, on Flickr

IMG_20151109_163805 by Brundall Motorsport, on Flickr

[Engineer1949]

its a 60ft flat bottomed barge originally rivetted iron swimhead design like a london lighter siting on the stern is a 170hp 5 cylinder dorman powered harbour master in a rudimentry wheelhouse hold take around 30 tonnes dredging sitting on the bow is a kubota 191 with extended boom and dipper with a rotary controlled grab i get a couple of pics tomorrow.

john

[Engineer1949]

managed to finish the last suspension corner today so all now done ready for finish next the exhausts start tomorrow wont bore you with more pics of the a arm just the reverse off the near side.


john

[Engineer1949]

not much to report really but eventually got the steering rack sorted and very nice it is too will be back on the project in a couple of weeks in earnest so watch this space.


john

IMG_20160108_123624 by Brundall Motorsport, on Flickr

IMG_20160108_123636 by Brundall Motorsport, on Flickr

IMG_20160108_123644 by Brundall Motorsport, on Flickr

[Engineer1949]

got a good day at the cerbera mill constructed the nearside exhaust from head to tail pipe only tacked as yet but all joints nice and tight so should be nice clean flow.

john

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[Engineer1949]

good day today made the exhaust mounts for the nearside exhaust now the rubbers have arrived and made a good start on the offside manifold.


john

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DSCN2020 by Brundall Motorsport, on Flickr

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DSCN2022 by Brundall Motorsport, on Flickr

[Engineer1949]

the collector is a gm offering strangely mosler found that it is the best manifold with not to radical tune obviously i have had to extend the primaries we have kept them as short as poss see what its like on the dyno in a few weeks as its going on emeralds engine dyno for running in mapping etc as to the routing of the exhaust you have to imagine a sill extending from the horizontal groove near the bottom of the door to floor level and widened by around four inches the whole car is eight inches wider than standard very speed 12 esk 2mtr track 100mm ride height big air dam diffuser and wing.

john

Edited by Engineer1949 on Friday 22 January 19:31

[Engineer1949]

got on well friday made the third mounting for the nearside exhaust there seemed to be to much twist from the weight of the silencer with just the two, then started back on the offside got the manifold all tigged up, lobsterbacked the bend after the flexy down pipe, cut and dressed the exit bend and cut the straight pipe to lenght, just the welding on that and the mounts monday then engine out and prepare for the dyno.


john

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DSCN2031 by Brundall Motorsport, on Flickr

[Engineer1949]

it is being built as a race car all being done according to the blue book, dont think it will race straight off get it well fettled first, the silencer is a varex which is straight through in normal mode but they have a motor driven valve which sends the gases round a longer route within the silencer the valve is adjustable with a keyfob type arangement so is adjustable from max noise to max silencing great for track days be able to trim it just right.

john

[Engineer1949]

more done today finished the offside exhaust all the mountings etc. then stripped them all out ready for engine out to go on the dyno had to make a new engine lift eye seem to have lost the first one i made.

john

bloody flikr playing up again i will post pics when it behaves

[Engineer1949]

another couple of productive days got the top end of the motor sorted removed the clutch flywheel ready for the dummy flywheel which will have the dyno coupling attached welded up the engine mounts fully and turned up a register for the bellhousing as i have to make a perfectly aligned adaptor from ls to dyno which is ford based, plus some overdue pics now flikr appears to be working again.


john

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DSCN2046 by Brundall Motorsport, on Flickr

[Engineer1949]

thanks for the compliment and yes would love to build you one.

john

[Engineer1949]

finished the bellhousing mods on the mill just the spacer to make for the central boss i am going to turn out the register i made to get the bolt holes right hopefully get it on the dyno next week,plus a pic i missed of the steel flywheel and clutch.


john

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DSCN2047 by Brundall Motorsport, on Flickr

[Engineer1949]

couldn't get a post up yesterday forum was down so this covers monday and today, finished the spacer for the bellhousing to dyno and got the housing bolted to the dyno to confirm all was well, then partially loaded the van ready for sticking the engine in the back and off to emerald in the morning, got the engine connected up had to do a slight mod to my engine mounts to fit there fitting but nothing to serious, got the water system plumbed up ,sorted the thermo couples for inlet and outlet water temps connected, sorted some of the wiring but still some way to go on that front, tomorrow fuel etc. so coming along nicely hopefully go for a start late this week.


john

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DSCN2062 by Brundall Motorsport, on Flickr

[Engineer1949]

splitter isnt fitted yet i havent started on the body other than cutting all the inside mouldings out, it will have just a basically cerb shaped skin with much wider wings wider sills and aero.
but another good day at the emerald mill, exhausts all on temporary stands made to support them and all the sensors are now fitted with one exception of the oil temp drill out a sump plug to take the sender tomorrow, but it now has wide beam lambda, exhaust gas temp, water temp both in and out,and oil pressure all have had to have adaptors made to get them to fit ,fuel is connected and the engine breathers sorted so tomorrow sees the wiring for the injectors throttle etc ready for a start monday, exiting times.


john

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DSCN2067 by Brundall Motorsport, on Flickr

[Engineer1949]

been a couple of days since the last report here are some pics of the outputs from the dyno remember this is work in progress so more to come i.e. ignition only around 18 deg advance on the new engine hence the nice hot exhaust but all good fun, there is a small video on my facebook page tvr engineer of the very first turn of the key more in days to come.


john

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[Engineer1949]

just a couple of comparison charts from the dyno room first one shows bhp and torque before any serious mapping second one shows bhp and torque differences between open straight through pipes and with the valve closed to give reasonable silencing.just as an aside i did see 503 bhp during the stepped power run these are all averaged out for the particular step, we where doing 500 rpm increases at three seconds intervals the wavy torque curve is the absorber settling down after a rev change.

john

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DSCN2089 by Brundall Motorsport, on Flickr

DSCN2089 by Brundall Motorsport, on Flickr

Edited by Engineer1949 on Wednesday 10th February 19:30

Edited by Engineer1949 on Wednesday 10th February 19:33

Edited by Engineer1949 on Wednesday 10th February 19:35

[Engineer1949]

stripped the engine off the dyno today after doing the battery compensation stuff yesterday all very good results so get the chassis finished then body fitting and internals lots to think on


john