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Watermans MKIV Build - Kit 207937
Hi all, first post on my new build thread. I thought I should post what I have being doing since receiving my complete kit in February of this year 2024. As an engineer and jack of all trades I have be doing some custom mods and additions as I move along, now on about page 300. Roadster is has had the first start and I have taken it up and down my long gravel driveway several times with the usual problems like oil leaks, brake adjustments and overheating/coolant leaks. I will start posting more now I have the thread started.
First pic is driving home to Rochester NY on Feb 6th.
Second pic is Roadster Today 8/12/24
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Out with old T-Bird 302 engine
In November it was out with the used original 1979 T-bird 302. I put 1,300 miles on the Cobra this summer with this first temp. engine, used to make easier to register in NY with no emission controls needed. One issue with removal and one suggestion. I suspended engine from chains attached to both ends of the heads but that created a problem with the body ON. The rear chains hit the body hard as I raised engine. Ended up using a ratchet strap around water pump to pull chains forward. Decided to keep the driveshaft inserted in TKX while removing to see if it could be in place during engine install in future. It can, but is tight to get by the 4" cross tube. Slow moments and all worked. It helped using a chain fall as small movements are easier than the 2T engine hoist that did not have enough reach with body on. As many know the driveshaft is very difficult to install after engine/tranny installed on a SBF/TKX/IRS.
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New BP347 engine w/ Sniper2
In early December it was time to install the new Blueprint 347 with Holley Sniper2. To convert from Carb to EFI I have previously changed out the in-tank pump and converted to all 6AN braided fuel line from Breeze. Added some dedicated battery wiring for the sniper and used the sniper wiring to power the pump. i purchased the Base dressed engine so it was Dyno'ed but missing all the front end accessories, plugs and wires. The reasons not to get the Fully dressed engine was two fold, looks and alternator. I wanted more the vintage look with a V-belt and wanted a 3G alternator not a 1-wire. So I sourced parts from CVF and Summit. Switched out the generic BP valve covers for Cobra covers powder coated in my car color. Ended up using a CVF Serpentine Conversion Kit which is a hybrid so less complex than as true serp. but using a ribbed belt vs V-belt. I suspended engine using the Kleiner idea of a spacer off the header bolts at the back so there was no body interference with a simple strap around the water pump, since back takes all the weight. This way the engine was basically complete except for the crank pulley removed for extra clearance. As with others the std BP oil pan is 8" deep so I raised engine with some washers under the motor mounts. This oil pan has a pocket/well at the drain plug which was slightly below the 4" frame rails so I have cut a 3" round hole in the Towbar skid plate at the well. Oil can be drained, pan is now protected and in my case the low point is the under car exhaust anyway. I reused the starter, clutch/tranny and exhaust(added O2 bung) from the old setup. Engine started right up on second turn of the key.
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Minor winter Improvements
Hand brake - I moved the existing FFR brake to the top of tunnel. Actually it was VERY easy and I recommend to all MK4 users. No new parts except a Lokar cable union block to grab the shortened cables. Mount the brake L-brackets to the underside of the tunnel tubes with a clearance hole in the top of tube for allen head bolt to the brackets. Existing FFR cable guides line right up so a straight shot to the E-brake clevis. E-brake works great with good leverage and useable with harness on.
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Brake Switch - While I had the footbox open I fixed a minor issue with brake switch location. It is so close to the pivot point that it is difficult to adjust so brake light comes on before brakes actually grab hard. I like to be able to warn tailgaters that I am about to slow down. Made a new L-bracket and mounted switch lower.
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Driver Footbox expansion - I was able to place a 2x4 between foot box and my shortie headers so made a new inner wall to the foot box while engine was out. It yields Two improvements. I did gain 1/2" more clearance for toe, more down lower BUT also now have a larger access for any brake/wiring issues.
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Lower Dash - Sniper Display
I added the lower dash panel originally but it was a time for an upgrade. Since the original build I have changed engine from a Carb 302 to a EFI 347.(what a difference). The Sniper2 EFI comes with a small 3.5" display that can be left connected while driving. So being a Techie I wanted it available for viewing in garage, at stop lights or by passenger. After much searching I decided to use this tilting under dash display holder.(readily available on Amazon). I cut a slot in the lower section OFFSET from cable so that display can be removed easily for closer viewing but stays put while driving. Offset slot holds display in mount but Tilt cable and display lifts out. Behind the display are USB and 12v ports. Just tilt mount up and they are accessible. I added an additional 12v cig lighter port on side of lower panel so that I can leave my Dash Cam plugged in full time..
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