 got me a pair of 40mm drla dellortos, need to rebuild a 1.7 to stock except for cam |
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| jimkelly |
 May 6 2007, 08:17 PM
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#1
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Delaware USA  Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region  |
will a stock 1.7 be able to fully utilize 40mm dellortos with the right cam ???
jim |
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| MecGen |
May 6 2007, 08:54 PM
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#2
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8 Easy Steps Group: Members Posts: 848 Joined: 8-January 05 From: Laval, Canada Member No.: 3,421 |
Hi Jim
I have driven a couple 1.7l with 40s and they ran just fine. I have 36s on my 2.0l because it was a special deal. In general, 40s are an all around good choice with a wide range of cams, just can be over carbed. A distributor is really important with large carbs, the wrong ones will exagerate (sp) the carbs shortcomings. Many years ago I drove a 1.7l /big bore/cammed/40s, and it tore the wheels loose in 2nd. I took out my 73 1.7l FI from storage today, it ran like shit. (IMG:style_emoticons/default/headbang.gif) If its a good deal, I'de say go for it. Later (IMG:style_emoticons/default/beerchug.gif) |
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| jimkelly |
May 6 2007, 08:58 PM
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#3
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
thanks - $440 on ebay shipped - jim
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| So.Cal.914 |
May 6 2007, 08:59 PM
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#4
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"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
Does it need to be stock bore?
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| jimkelly |
May 6 2007, 09:06 PM
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#5
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
jwalters has me thinking a set of nice thick walled medium compression cylinders would be nice for reliability. hoping i can just cam the shit out of a stock 1.7 rebuild and add big carbs?
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| So.Cal.914 |
May 6 2007, 09:11 PM
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#6
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"...And it has a front trunk too." Group: Members Posts: 6,588 Joined: 15-February 04 From: Low Desert, CA./ Hills of N.J. Member No.: 1,658 Region Association: None |
Ran webers on mine before it mutated to a 1911, ran good for a 1.7.
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| jimkelly |
May 7 2007, 01:45 PM
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#7
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
i'd like for my first engine build to be a semi stock 1.7 with kick ass cam and be able to wind to somewhat over stock rpms. thanks jim
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| type11969 |
May 7 2007, 04:36 PM
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#8
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Senior Member Group: Members Posts: 1,231 Joined: 2-December 03 From: Collingswood, NJ Member No.: 1,410 Region Association: North East States |
I'm running dell 40s on my 1.8, don't see why you couldn't do it with a 1.7. I'm having some issues with them currently, but I think the 32mm vents are too big. I'm dropping down to 30s, I suggest at least the same for you for starters, maybe even 28s. Unless you plan on making it a real screamer. Smaller vents with the smaller engine will make it more driveable but can limit your top end.
Get the dell tech book and cbperformance.com will be your friend for jets and parts. -Chris |
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| type11969 |
May 7 2007, 04:38 PM
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#9
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Senior Member Group: Members Posts: 1,231 Joined: 2-December 03 From: Collingswood, NJ Member No.: 1,410 Region Association: North East States |
Oh yeah, if you do plan on making it a screamer, you will have to go non-stock on the valvetrain!
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| Twystd1 |
May 7 2007, 04:43 PM
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#10
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You don't want to know... really..... Group: Members Posts: 2,514 Joined: 12-September 04 From: Newport Beach, California Member No.: 2,743 |
28 vents is correct. As thats the smallest they make.
C |
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| Jake Raby |
May 7 2007, 04:48 PM
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#11
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Engine Surgeon Group: Members Posts: 9,394 Joined: 31-August 03 From: Lost Member No.: 1,095 Region Association: South East States |
DO NOT use a big bore kit designed for the 1.7 engine, they have the thinest walls of any cylinder!!
Buy the big bore set for the 1.8 engine and machine the head registers to 105mm from 100mm and you'll be golden.. A RAT 9520 cam will make it sing too! |
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| jimkelly |
May 9 2007, 07:37 AM
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#12
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
thanks jake and guys !!
i have a 1.8 sitting on the shelf too that i can rebuild instead - would i be much better off using the 1.8 case and heads instead of a 1.7 ?? Jim |
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| type11969 |
May 9 2007, 07:41 AM
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#13
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Senior Member Group: Members Posts: 1,231 Joined: 2-December 03 From: Collingswood, NJ Member No.: 1,410 Region Association: North East States |
Case - doesn't matter
1.8 heads - has the larger cylinder register so if you want to make a 1911 or 2056 you won't need to get the heads opened up (as you would if you used 1.7L heads). |
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| jimkelly |
May 9 2007, 07:43 AM
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#14
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Delaware USA Group: Members Posts: 4,969 Joined: 5-August 04 From: Delaware, USA Member No.: 2,460 Region Association: MidAtlantic Region |
thanks - so i will use the 1.8 heads - thanks : )
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