tr7 engine

westcraigs · Postby **westcraigs** » 07 Dec 2010 20:17

anybody help, i have just bought an 82 tr7 my problem is that just below the water pump theres a slot about halft inch by two inch where water runs out when filled ...what should be in their

Workshop Help · Postby **Workshop Help** » 07 Dec 2010 20:30

Your finger!

Just teasing, Congratulations! You now are eligible for your initiation into our select society thru the tribulations of the Horror From Hell Water Pump Replacement Saga.

Mildred Hargis

westcraigs · Postby **westcraigs** » 07 Dec 2010 20:45

well come on guys, is it the water pump right enough

jclay (RIP 2018) · Postby **jclay (RIP 2018)** » 07 Dec 2010 21:09

Hey, Craig,

Welcome!

That being said, yes, it sounds like the water pump. It seems that every TR7 owner will go through this at one time or another.

Is you car fuel injected or carburetored? You can remove the intake as one unit to give you access to the water pump. Then, you will remove the bolts and the top cover. Rent a slide hammer from your friendly parts supplier and use it to remove the pump. (See that big bolt in the middle, don't mess with it as it will do you no good!) Next look down in the hole. Is there a brass cup with slotted sides still there or is it attached to the pump.

If it is still in the hole, use the slide hammer with a hook attachment to remove the cup. You are now ready to install the new pump. As you push it home, be sure to turn the vanes until the gear engages the jack shaft gears. Continue to turn the pump as you push it down.

Now, install the cover and just tighten the bolts hand tight. You need to figure the free play. With the cover just snug, use feeler gauges to measure the gap between the bottom of the cover and the block. Check the instructions that came with the pump for the correct amount of clearance required. You will find three gaskets in the box the pump came in. Each one is a difference thickness. now, here is where that math comes in. You will add the clearance you measured to the amount of free play the instructions gave you. The sum is the thickness that will be required of the gaskets to give you the correct free play. So, measure the thickness of the three gaskets and add them together to give you the sum. Remove the cover, install the gasket pack and replace the cover. Button it all up.

PS, while you have gotten all this apart, replace the hoses.
PPS, Remember to install the "O" ring along with the intake manifold gasket.

Water pump cover and intake gasket.

Clay

[url="http://web.mac.com/jclaythompson/Site/Welcome.html"]My Triumph Site[/url], [url="http://web.me.com/jclaythompson/Technical"]Technical Stuff[/url], [url="https://docs.google.com/?hl=en&tab=wo&authuser=0&pli=1#folders/folder.0.0B6b9tx6hnkzLYzM5MmNhYWItZjliYS00M2QzLWE1M2YtNWNlZWIzZjExZTdm"]Download Page[/url]

westcraigs · Postby **westcraigs** » 07 Dec 2010 21:18

thanks clay,
so is it new pump or repair kit, and what allows the water to pass through the slot below the pump?

Workshop Help · Postby **Workshop Help** » 07 Dec 2010 23:20

Since the pump shaft will be corroded from the passage of time, miles, and worn out coolant, a new pump will serve you so much better.

The leakage thru the slot is from a deteriorated seal on the pump.

Mildred Hargis

catmanboo · Postby **catmanboo** » 08 Dec 2010 01:37

before you rip into it, your first investment should be a Haynes TR7 manual. provided you're mechanically proficient, it'll become your TR7 bible. there's a wealth of advice & information right here at your disposal- welcome to the "club"! my first fix on my '76 FHC (fixed head coupe- Brit-speak for hardtop) was... water pump! only mine was hemorhaging oil, not water. the pump is subject to both under pressure. this isn't a British invention; that slant-4 motor was borrowed from late '70's Saab 99.[V]

Workshop Help · Postby **Workshop Help** » 08 Dec 2010 03:11

Err, ummm, actually Triumph did develop and manufacture our beloved engines. Saab came along in need of a new engine for the Model 99 and bought it. Their engineers did some engineering on it, turned it around, altered this, that, and the other and Presto! There it is.

The thing about history is it's bad habit of sneaking up behind you and nipping your hind-quarters.

Mildred Hargis

elsberry · Postby **elsberry** » 08 Dec 2010 13:12

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Mildred

Err, ummm, actually Triumph did develop and manufacture our beloved engines. Saab came along in need of a new engine for the Model 99 and bought it. Their engineers did some engineering on it, turned it around, altered this, that, and the other and Presto! There it is.

The thing about history is it's bad habit of sneaking up behind you and nipping your hind-quarters.

Mildred Hargis
<hr height="1" noshade id="quote"></blockquote id="quote">

From what I understand, Saab improved upon it also, even providing a turbo model, which occasionally comes up in conversation as to whether it will fit between the wings of our TR7 and be happy. I think the 'official' jury is still out on that one BTW.

Dave

1980 TR7 DHC
1974 Jaguar XKE - Sold!
1994 Jaguar XJ12

[url="https://docs.google.com/leaf?id=0B26QZc97k0noYTAxMzUxZjgtMzZkZS00MWEwLWEyZmYtOWRkMzliNWZhMDA3&hl=en"]My Triumph Document Repository[/url]

FI Spyder · Postby **FI Spyder** » 08 Dec 2010 15:02

While in initial stages of designing their own engine they decided it was cheaper to buy the engines so they initially bought their engines from Triumph, later making it themselves in the process making some improvments. The second version of the engine they used the same basic measurements and design concept. The third version they made more changes including eventually turbo charging it rather than going the V-6 - V-8 route which is what they were initially considering. In the hands of the Swedes our 4 cylinder engine was voted europes most reliable 4 cylinder engine by a consortium of automotive journalists.

It would be an interesting project to put a Saab 99 engine in a TR7. Imagine all the comments you'd get at car shows...."Hey, you put the engine in backwards!" [:p]

TR7 Spider - 1978 Spitfire - 1976 Spitfire - 1988 Tercel 4X4 - Kali on Integra - 1991 Integra - Yellow TCT

Beans · Postby **Beans** » 08 Dec 2010 18:25

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by westcraigs

... so is it new pump or repair kit, and what allows the water to pass through the slot below the pump?<hr height="1" noshade id="quote"></blockquote id="quote">
A repair kit should be a good and cost effective solution.
Beware of low quality aftermarket items (applies for the water pump too b.t.w.)
A few write ups in my weblog, labelled water pump (why should it get its own label [:I])

<center>

1980 TR7 DHC (my first car, now restored and back on the road)
1981 TR7 FHC Sprint (better known as 't Kreng)
[url="http://www.tr7beans.blogspot.com/"]My Weblog[/url]</center>

tr7sprint1 · Postby **tr7sprint1** » 08 Dec 2010 20:23

download the factory repair manual from [url="https://docs.google.com/?hl=en&tab=wo&authuser=0&pli=1#folders/folder.0.0B6b9tx6hnkzLYzM5MmNhYWItZjliYS00M2QzLWE1M2YtNWNlZWIzZjExZTdm"]jclay site[/url]. Get that one that say's tr7 rom( that's for 79 and up tr7). Hanyes repair manuals are useless in most cases).

"GETTING SPEED OUT OF A LOW POWERED CAR IS OFTEN MORE REWARDING, THAN WITH TIRE-SMOKING BRUTES" 
<h4><center>http://cliffstr7sprintconversion.blogspot.com/</center></h4>

RadioGuy · Postby **RadioGuy** » 08 Dec 2010 22:32

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Hanyes repair manuals are useless in most cases).<hr height="1" noshade id="quote"></blockquote id="quote">

Running at 98% useless in my experience[}:)].

Maintained on Saturdayâ€¦Drive on Fun-Day !!! 1976 FHC - 1980 DHC

catmanboo · Postby **catmanboo** » 18 Dec 2010 21:53

well,I stand (belatedly) corrected- but I love stirring up these little history lessons! I find it a bit bizarre that Saab would buy anything from Triumph, considering the difference in perceived/actual build quality, reliability,engineering & longevity between the two.I've had 5 classic 900's in the past 11 years or so,(still have 2- '86 900 is my winter beater) & would, in an instant,trade that Triumph slant-4 for a Saab twin-cam; if not for the fact that on the Saabs, the oil pan is the transmission![:0][:D]

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