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Petit Bastard: 914 Rally Build

 
Old 11-14-2018, 07:27 PM
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Feudal Serf
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Default Petit Bastard: 914 Rally Build

Hi All, Im starting this thread as an introduction to the 914 community. Recently purchased a 914 race car that has been campaigned as "Petit Bastard" in Quebec.
The car is a 914-4 that was purchased new in 1974 in Montreal. I have historical records, and boxes of parts that I've combed through, including a racing log book.

Many modifications have been done. Chassis stiffening front and rear. Swaybar upgrades, Modified side shifting 901 5 speed gear box, plus 2 spare trans. Conversion from FI to Weber 40's with 28mm venturies. European flat top pistons 96mm 2051cc 130hp engine, with Webcam 86a grind. ATL fuel cell, Lifeline central fire extinguisher.

It has a half cage, stripped out interior.

Presented in Saturn Yellow, paint is perfect at 30feet


My Plan:
Full Roll cage from Custom Cages UK in T45, which weighs roughly 48Kg
Custom seats Rallye spec with 5 point openings from GTS Classics

Full work through of bushings, and serviceable parts.

May paint it, considering wide flares.

I've gone through my 1990 964 C4 over the past few years with the intent of racing it, but i've become too attached to the car, and prefer spirited driving and preservation.

Here are some pics of the car, I hope to keep this thread updated over this winter.

Cheers
FS
@beechhousegarage



Inspiration from 914 racing history


Picture by the previous owner



Picking up the car



Charlotte wants the car when she is old enough. " See there is a C on it, It's mine"



Fall Ride, Making notes on winter mods.



Serious Cage!



Rallye seats with plaid.





Customizing the seating position by "adjusting" the rollbar

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Old 11-17-2018, 09:13 PM
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Shifting is vague, getting used to the dog leg gearbox.

Shifting into first is easiest when crawling to a stop.
Shifter bushing all appear new, but the one at the trans housing had a lot of play.
The opening is oval and worn, so the bushing moves around too much.

I went with the bronze bushing from PMS, they suggest making the opening wider, but in my case it fit right in.
Used a 1mm flat rubber gasket around the bronze, pressed it in and engaged the circlip

The H pattern is soooo much more direct, and the spring under the shift lever now locks out R/1st better.




patrick motorsport trans housing bushing
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Old 11-19-2018, 02:21 PM
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If the body and fenders are good, I certainly would not cut it. Please remember that a rear brass bushing will wear the shifter more rapidly than the plastic bushing, also very important to grease all of the bushings
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Old 11-20-2018, 06:36 PM
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Thanks dr914, yes all the bushings are greased up. I used white lithium, wanted to avoid moly re any reaction or pitting in bronze.

I do like the narrow body look, fenders are rolled and in decent shape.

prob been some dog teeth grinding in the recent past given the fine metal in gear oil and the plug.


trans drain plug
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Old 11-21-2018, 11:20 AM
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hope your welder did not burn any of the vinyl with the welding spatter!
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Old 11-24-2018, 03:47 PM
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Default fitting GTS Classic seats for Tall Drivers

Stefan from GTS classics was kind enough to ship me an unfinished seat frame for the Rallye seat.

I need to sort the seating position, so i can decide on lowering the floor pan. I'm 6'5" so sitting in the a race spec 914 car with a helmet is a challenge.
It's prob my biggest concern about the build, putting all the work into something I can't fit into. Since my codriver and I will switch, i decided to start with low profile racing seat rails. So far, I'm optimistic that it might work without lowering the floorpan.

I kept the stock seat mounts in place, I decided to mount M8 bolts through a hole in the floor. Kept the handbrake in stock position.

These seats, do not have the fibreglass bottom of the stock 914's, with the elastic bottom straps Im essentially sitting on the floorpan right now. Will customize the amount of bottom cushion for the drivers side, balancing fitment and safety.

Cheers
FS






GTS Classic Rallye Seat frame, with race sliders.


notched out crossmember 20mm Welded plates and captive nuts for M8 10.9 grade bolts



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Old 12-12-2018, 04:14 PM
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Default roll cage from custom cages uk


solid multipoint cage design in T45




mocked up the cage
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Old 12-12-2018, 04:20 PM
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Default Rust Repairs

Found some rust near the engine mount on the left.



repaired the area of clean metal behind the brake line, setting up a patch at the rear of the left longitudinal chassis.




and a heavy plate going over this
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Old 12-12-2018, 11:00 PM
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Originally Posted by Feudal Serf View Post


mocked up the cage
Cool, but I doubt blue tape will pass tech.
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Old 12-15-2018, 02:15 PM
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Default Trailing Arm Bushings

Well..... disassembled the rear brakes and trailing arm attachments with plans to tackle the rear trailing arm bushings.



914 rubber trailing arm kit


Everything apart and inspected callipers, serviced slider pins and flushed new brake fluid though.
The inner nut on the trailing arm rod, i couldn't get to move. Started to gaul the nuts and backed away.

There is a very small play in the bushing. right side greater than left.

There are multiple grease fittings on the trailing arm. So i filled them up with heavy moly grease.
No more play noticed.

The arms have been reinforced, so my guess is these fittings were added. ??

Anyone have experience with these? do i have to split the nut? I tried heat and plenty of penetrating oil.




Grease fittings circled




left side, fittings circled. Recent frame repair welded, painted and rock guard.

cheers
FS
IG @beechhousegarage
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Old 12-15-2018, 02:38 PM
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your right, i should have stuck with the black gorilla tape
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Old 12-17-2018, 01:14 PM
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someone installed plastic bushings hence the grease fittings, not stock on a 914. If there is play, should not be taken up by grease. Something is wrong. Could have wallowed out the inner swing arm mounting hole. It is unusual that the nut will not loosen, many many we see alway have the nut already loose from use. We standardly on our check list check the tightness of the rear swing arm bolts. (stupid question but you are moving the nut counter clockwise to loosen, correct?)

Originally Posted by Feudal Serf View Post
Well..... disassembled the rear brakes and trailing arm attachments with plans to tackle the rear trailing arm bushings.



914 rubber trailing arm kit


Everything apart and inspected callipers, serviced slider pins and flushed new brake fluid though.
The inner nut on the trailing arm rod, i couldn't get to move. Started to gaul the nuts and backed away.

There is a very small play in the bushing. right side greater than left.

There are multiple grease fittings on the trailing arm. So i filled them up with heavy moly grease.
No more play noticed.

The arms have been reinforced, so my guess is these fittings were added. ??

Anyone have experience with these? do i have to split the nut? I tried heat and plenty of penetrating oil.




Grease fittings circled




left side, fittings circled. Recent frame repair welded, painted and rock guard.

cheers
FS
IG @beechhousegarage
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Old 12-18-2018, 06:35 PM
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Thanks Dr914!
Well I picked up a new 22mm open wrench and with the double wrench for leverage, i was able to remove the nut. Will tackle this soon.

Building the car for tarmac rally, so I've been researching coil over options.
Car has been setup for smooth circuit racing. Koni's are in good shape.

Anyone have experience with the Rebel S Racing collars for adjusting ride height?

cheers
FS
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Old 01-30-2019, 02:41 PM
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Hi. Any more updates or news?

There has been a few 914's at Targa over the years.......watch out for the dips.....and bumps!
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Old 03-03-2019, 12:05 AM
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To dramatically improve shifting get a side shift tranny and pair it with a Rennshifter. You wonĺt believe the direct feel and precision Converted mine from the spoon in pudding to an utterly modern precision shifter.
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